SCIENTIFIC ABSTRACT UFELMAN, A.F. - UFIMTZEV, V.N.

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• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001857820007-3
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: April 3, 2001
• Sequence Number: 7
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

SOV/106-58-4-8/1~
Use of a Potential Analogue Method for the Design of Electrical
Filters
Taking logs of (1):
ln S = A + iB r (2)
where A - the working attenuation,
B - the working phase change,
t-- the working transfer coefficient.
For the attenuation.,we have:
(% xl)(h - % ) ... (% - % i
A(k) = lnISI = ln 3 2n-1) I ln H (3).
11
('x - x2)(% - %4)"'(%
The potential function of a plane electrical field takes the
form of an infinite conducting plane, such as a large electro-
lytic tank with a thin layer of electrolyte. Lettwo electrodes
between which a current I ? flows dip into the electrolyte.
Then the potential at any point M situated at a distance R
from the negative electrode and R 2 from the positive electrode
Card 2/13

SOV/106-58-4-8/16
Use of a Potential Analogue Method for the Design of Electrical
Filters
is determined (Ref 2) by the formula:
IM) Rl
U =2TTyj ln - (4)
R2
where y is the conductance of the electrolyte, is
the depth of the electrolyte.
Two co-ordinates X and Y (Figure 1) are taken on the
conducting plane and the electrolyte surface is considered
as the plane of a complex variable:
z = x + iy .
Then the distance from the point M to the electrodes is
determined by the following:
Rl z - zd R2 =1 z - z21
and substituting in (4), we obtain:
Card 3/13

SOV/106-58-4-8/16
Use of a Potential Analogue Method for the Design of Electrical
Filters
Z Z
U a ln (5)
z z2
where
2Try
is a constant depending on the current in the electrodes
and on the conductaiie, and depth of the electrolyte. For
a given number or~Vfflrg, the potential at any point of the
plane Z equals:
U(Z) = a lnI (z - zl)(z - z3)...(z - Z2n-1)
J(z - Z2)(z - z4) ... (z - z2n)
where z1,6.., z 2n-1 are the co-ordinates of the negative
electrodes, Z2, ... Iz 2n are the co-ordinates of the positive
C ar d4l~'? trodes.
-1A

SOV/106-58-4-8/16
Use of a Potential Analogue Method for the Design of Electrical
Filters
If the electrode co-ordinates are chosen so that they are
nume ically equal to the values of the zeros and the poles
of the transfer function, then the analogy between ex-press-
ions (3) and (7) is complete, except that in the denolation
of the variables, the constant multiplier a and the
additional term lnH . Denoting the independent variable
in both expressions by X , i.e. assuming that the plane
of the complex frequency coincides with the plane Z and
solving simultaneously Eqs.(3) and (7), we obtain:
UW
A(%) - + InH (8)
a
For a reference level X0
U(% 0)
A(ko ) = - + lnH (9)
a
and Bubtbacting Eq.(9) from (8), we have:
Card 5/13

SOV/106-58-4-8/16
Use of a Potential Analogue Method for the Design of Electrical
Filters
A(%) - A(%O) =
U(N)
- U(%O)
(10)
or
A = U/a
(11)
where U is the potential difference measured in the
electrolyte between the point X and the reference point
% A is the difference in the working attenuation at
fiequencies corresponding to these points.
If the current in the electrodes is a#sted so that a
equals unity, then A = U i.e. the potential difference
in Volts is numerically equal to the working attenuation
in nepers. -The current in each electrode must equal:
I = 2 fVy (12)
3
A simple method for determination of the frequency
charac*ori,stic of the working attenuation can be devised
on the basis of this mathematical analogue. Positive
Card 6/13
a

SO'1/106-58-4-8/16
Use of a Potential Analogue Method for the Design of Elect-rical
Filters
electrodes are placed on the complex frequency plane,
which coincides with the electrolyte surface, at points
corresponding to the poles of the transfer function and
negative electrodes at points corresponding to the zeros
of the transfer function. Equat currents determined by
Eq.(12) are established in all the electrodes. Then the
potential, measured along the real frequency axis relative
to the co-ordinate origin will equal the working attenuation
in nepers. Any given attenuation can be obtained by
changing the positions of the electrodes. Then knowing
the zeros and poles, the four-terminal network for the
given attenuation can be determined.
The character of the field for a half-section of a low-
frequency k type filter is determined and an equation
for an ellipse is obtained. Thus, the lines of equal
attenuation of a k type half-section will be ellipses.
In the potential analogue equipotential lines CU.L'.LUbVond
to lines of equal attenuation. Any equipotential line can
act as an electrode and the most convenient electrode will
be a plane electrode placed in the electrolytic tank along
Card?/13 the real frequency axis from -iwl to + iw2 An

SOV/106-58-4-8/16
Use of a Potential Analogue Method for the Design of Electrical
Filters
infinitely distant point can serve for the other electrode,
for which the frame of an electrolytic tank of large
dimensions can be used. In this case, the electric field
will be as shown in kigure 2. The current lines shown
dotted are everywhere orthogonal to the equipotential lines,
shown in full and form a family of co-focal hyperbolae with
focii + iWl .
To determine the frequency-attenuation characteristic of
the type k half-section, the potential along the real
frequency axis relative to the plane electrode is measured
by a cathode voltmeter. If the attenuation of the full
type k section is required, then the current in the elec-
trodes must be doubled.
For a type m section, the characteristic transfer constant
is determined by the formula:
r
m Z
lm
sh
Card 8/13 2 =V4Z2m

SOV/106-58-4-8/16
Use of a Potential knalogue Method for the Design Of Electrical
Filters
Again, hyperbolic sinusoidal functions are presented with
the difference that the right-hand side reaches an
infinitely great value not when X = 0o , but at a
specific finite frequenc7:
iWl
00 = � = + iW COV (20)
N 1-e
corresponding to the attenuation pole of the type ia.
section.
To measure the frequency characteristic of the type m
section, it is necessary to put one electrode at the point
+iw,. and the other at the point -iw,,. Current of
strength I is passed through each electrode and the total
current 21 passes through the plane electrode disposed
along the segment -iwl +iwl The potential relative
to the plane electrode measured by a cathode voltmeter along
Card 9/13 the real frequency axis will be proportional to the

SOV/106-58-4-8/16
Use of a Potential Analogue Method for the Design of Electrical
Filters
characteristic attenuation of the m type section. If
the filter consists of several m type sections, then
electrodes are placed in the electrolytic tank at points
on the real frequency axis corres onding to the attenuation
poles of the individual sections fFigure 3). The same
current 1 .4 flows in all the electrodes. Then the
potential relative to the plane electrode in volts measured
along the real frequency axis will equal the summated
attenuation of the filter in nepers.
To avoid errors due to the finite dimensions of the electro-
lytic tank and the Dhysical positioning of the electrodes,
it is convenient to transform the complex frequency plane
into a rectangle (Ref 3) by using an elliptical integral
of the first order. This transformation is vrritten in the
form of an elliptical sine function.
Then, the whole plane of the complex frequency is trans-
formed into rectangles on the Z plane (Figure 3).
In view of the symmetry, it is sufficient to consider only
one quadrant transformed into a rectangle on the plane Z
with sides K and KI (Figure 4).
Card 10/13

SOV/106-58-4-8/16
Use of a Potential Analogue Method for the Design of Electrical
Filters
The apparatus is illustrated in Figure 5. The base of
the tank is a polished sheet of glass 60 x 70 em and
4 5 mm thick. Four plexiglass or ebonite plates,
15 20 mm, 5 - 6 mm thick, are fixed to the glass and form
the electrolytic tank. The width of the tank corresponds
to the side K and equals, for example, X = 50 cm, The
height of the bath corresponding to side K,k equals:
YK, = 50 KI cm (2?)
K
The upper movable plate corresponding to the stop band is
fixed in accordance with this dimension. Tap water was
used for the electrolyte and the depth was 3 - 4 mm. Thin
sewing needles or copper wires 0-5 - 0.6 mm diameter were
used for the electrodes. A strip of copper foil secured
by screws to the lower fixed plate of the tank formed the
plane electrode. The co-ordinates X and Y were read
off directly in mm from graph paper under the glass. To
av6id polarisation of the electrodes, a 1 000 c.p.s,
,enerator (types 3G-2A or 3G-10) with a 60 V output was used.
Card 1013

SOV/106-58-4-8/16
Use of a Potential Analogue Method for the Design of Electrical
Filters
For measurement of the potential relative to the plane
electrode, a valve voltmeter of type VKS-7B was used. The
potential drop across 300 9 resistors connected La series
with each electrode was measured by a high impeda=5 input
meter, thereby obtaining the current value.
The current in each electrode is adjusted to agree with
Eq.(12) and then the voltmeter reading in volts is equal
to the attenuation in nepers at the gDrresponding frequency.
It is necessary to remember that the current in the
electrodes in the transformed plane is two times less
than in the plane A (Figure 4) and therefore formula
(12) takes the form:
Ia = ft t
(28).
The elentrode current is, in practice, within the limits
.0.5 to 1.5 mA, depending on the salt content of the water
and on the depth of the electrolyte.
In Figure 6 is produced the curve of the characteristic
attenuation of a filter of class 3, 5 constructed from
Card 12/13

SOV/106-58-4-8/16
Use of a Potential Analogue Method for the Design of Electrical
Filters
measurements taken in an electrolytic tank. There is good
agreement between experimental and calct4lated results
There are 6 figures, 1 table and 6 references, 3 of which
are Soviet, 1 German and 2 English.
SUBMITTED: March 11, 1957
card 13/13 1. Electric filters--Design 2. Mathematics--Applications
`4'

AUTHOR: sov/lo6-58-12-7/13
TITLE: A Theorem on the Mean Valua of the Lttezlaation in the
Stop-Band of a Filte-1, (Teo5?ama o srednem znachenii
zatukhar-lya v polose zaderzhivaniya filltra)
PERIODICALS Elektrosiryazlq .1-958, Nr 12, pp 49 - 57 (USSR)
ABSTRACT: At the p-resent t-img, the 1.9sign of electrical filters
is 1based ca the simplest r.;ase whqn required
attg.r.,.-ation -IM stop-~.-,and or JLM r_art of the st--)p-ba_ne_
is nonstant-. In pra-::ti.-z., *.b.a rsq:~:inment3 are often
different,, in one part :~f tte banO., high at-tonuation 1.,3
required., tut in ot-her parts the al'"'Cenuation may be
significantly less. In t-hase casa3, to des:~ga Vae filter
gi-;ing & guaranteed. constant, min:~zpm attenuation is
un9~-.,onom1-.-a-!_. The (i,9*.--_-,lope a nev theorem, from
which simple design f3:_=a_~.ae be derived, enabling
the optitmim filter design to be obtained quickly and
accurataly. The theorem is formulated as follows: 'The
mean value of tha chaTa.Qtsz-14stic attem7atioii -in the
stop-band of t filtar, expreseed *-n te-.,ns of an ellipticall
Card 1/2 frequenc~y- scale remains n=_star.; for a vfrien class of
filter wtth any giver- of the -infinite-

3011/106.- 58,.12-7/13
A Theorem on the Mean Value of the Attenuation in, the Stop.-Band of
a Filter
attenuation frequencies". The article commences with
the results obtained by-the author (Ref 1) who showed
that the complex frequency plane is transformed into
rectangles on the z-plane by the expression;
A = i sn(z, k),
where A ='7L + iA - normalized complex frequency,
.a =~P~l - normalized frequencyl
i - cut-off frequenc~y.
The design formulae derived are also applicable to the
working attenuation, but the proof of this is to be the
subject of a separate article.
There are 3 figures, 1 table and 3 Soviet references.
SUBMITTEDs March 21, 1958.
Card 2/2

UPELIMAN, A.P., assistent
glotarev's fraction and its use in designing filters b7 means of
characteristic parameters. Sbor. LIIZHT no.158:387-W8 '58.
(MIRA 11:6)
(Electric filters)

Generalized theory used in designing electric filters. Sbor.
LIIZHT no.161:13-42 '58. (KIRL 11:12)
(Electric filters)

UF]CI,# W. A.?.
--------------
Generalized theory on Chebyahev reactive fIlters. rz'V.
vye. ucheb. zav.; radlotekh. 2 no.6:679-693 N-D 159.
(MIRA 13:6)
1. ReXomendovans. kafedroy elektrosvyazi Urallskogo
elsk-tromekbanicheakogo Institute. i*.zhenerov zheleznodorosb-
mogoitransporta~.. f
I- I. (Electric filters)

AUTHOR. Ufellman, A.F. sov/io6-59-7-9/16
TITLE. The General-r-awfor the Position of the Roots of the
Characteristic Polynomial in the Complex Frequency Plane
for the Design of Filters for the "Working" Parameters
PERIODICAL: Elektrosvyazl, 1959, Nr 7, Pp 57 - 65 (USSR)
ABSTRACT: The "working" parameters of a four-termtnal network,
consisting of a finite number of lumped elements, can be
expressed by three real polynomials. f, g, h of the
complex frequency X = 6 + iw
9 g +
S= - 1j, W M
f
where S is the working transfer coefficient4
W is the normalised input impedance.
Also:
e 2A i(p M
where A = logjSj is the working attenuation of the four-
terminal network;
Cardl/6 = h/f is the "filtration" function.

SOV/106-59-7-9/i6
The General Law for the Position of the Roots of the Characteristic
Polynomial in the Complex Freque-acy Plane for the Design of Filters
for the "Working" Parameter-4
For reactive four-terminal n-3tWCrh37 the polynomials are
related by.
+
The polynomials f, g, h are the simph-st and most
universal characteriiti:,s of a foux-terminal network since,
L
if these polynomials are known, both the working and
rAiaracteristic; parameters ;f the ne-twork v-.an be found and
also Its ciroult determined.
The problem of synthesis of six electric filter according
to its working attenuation consists of finding a filter
cirouit with the minimum number of elements to give a
working attenuation in the passband smaller than some value
A and In the stopband greater than A.
W-a:K Min
This problem can be divided into three parts:
1) The problem of findIng the best approximation to the
Card2/6 given requirements of the iforkIng attenuation, using a

SOYI?6-5~-Jnq/~6
The General Law for the Position of the 00 s 0 e haracteristic
Polynomial in the Complex Frequency Plane for the Design of Filters
for the "Working" Parameters
fractional rational h/f of the lowest possible
degree.
2) Determination of the polynomial g(k) by Eq
3) Determination of the filter circuit according to the
polynomials found (f, g, h).
The first and third problems have been examined in the
references quoted but determination of the polynomial g(X)
presents great difficulty. The roots of the polynomial
g(X) are equal to the roots of the characteristic equation
of the system and correspond to the frequencies of free
oscillations which can arise in a loaded four-terminal
network. Therefore, g(%) is called the characteristic
polynomial of the four-terminal networks Sinze in passive
four-terminal networks, the free oscillations must decay,
the real part of the roots of must be negative.
This enables the polynomial g(X) to be determined by the
known roots of the righthand part of Eq (5); all the roots
Card3/6 with a negative real part f~orrespond to the polynomial

sov/lo6j~,-~,1/16
The General Law for the Position of the Roots of e aracteristic
Polynomial in the Complex Frequency Plane for the Design of Filters
for the "Workingn parameters
g(X) and with a positive real part the polynomial g(-%)
Thus, tho entire problem is to find the roots of the
righth,ind part of Eq (3). A wethod is developod in the
artlcle for finding the roots of the characteristic poly-
namial, based on using the special properties of the
.filtration" function, which for filters is a rational
Chebyshev fun,~Aion. The properties of Chebyshev functions
enable these functions to be u3ed fcr the design of
electrical functions. Other conditions being equal, they
ensure the. maximum possible working attenuation in the stop-
band. The Chebyshev functions can be simply rvj-zesented
by a "comparison" filter, which is a fi-Iter in. which the
characteristic attenuation poles i~oineide with the poles of
the given Chebyshe,~r function. Figure 5 shows a Chebyshev
function of the fifth degree obtained by ustnZ a c-amparison
filter, consisting of two m--typa sections and one k-type
half -section.
Card4/6 It is shown that rational Chebyshav functions can be uniquely

SOV/106-59-7-9/16
The General Law for the Position of the Roots of the Characteristic
Polynomial in the Complex Frequency Plane for the Design of Filters
for the "Working" Parameters
represented by using a comtwlson filter. On this basis
a general law for the distribution of the roots of the
characteristic polynomial in the complex frequency plane is
found. The roots of the polynomial g(%) are situated
in the.left half of the A =plane at points of intersection
of the lines of equal attenuation of the comparison filter
at which the characteristic attenuation equals:
AN = Ar sh
Y~ax
with the lines of equal phase, which unite each pole of the
Chebyahev function with the corresponding zero.
Using the conform transformation of the complex frequency
plane, the exact design formulae for determination of the
roots can be obtained for the case when the filtration is a
Car(15/6 Zolotarev fraction -and the simple approximation
LIS ff.:h_XIL:K

9/1, - - tic
SOV/slOo6f-5t e Characteris
The General Law for the Position of the Root' tl
Polynomial in th(,% Complex Frequency Plane for the Design of Filters
X,
i-or the "Working" Parameters
formulae for the general case when the filtration
function is a Chebyi3hev ftaction.
There are 3 figures and 10 referencas, of which 7 are
Soviet, 2 German and 1 American.
SUBMITTED. March 10, 1959
Card 6/6

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a-la Zan.

26211
S11061601000100310031003
q, 3 .3 0 A055/A133
Ab"IHOR* Ufellman, A.F.
TITLE: Determination of the roots of the characteristic polynomial of Che-
byshev filters
PERIODICAL: Elektrosvyaz', no. 3, 1960, 44 -51
TEXT: In a previous work [Ref. 3: Raschet elektricheskikh filtrov s pomo-
shchfyu po-lentsiallnoy analogil. Kandidatskaya dissertatsiya. (Calculation of
electrical filters with the aid of potential analogy. Candidatels Dissertation.)
MIMT, 1957], the author showed that if the filtration function is a Zolotarev
fraction, the disposition of the characteristics polynomial roots proves to be Ue
simplest in the conformally transformed plane z related to the complex frequency
plane by the equation: A- ish (z, k), (2) where A - E + 12 is the or-
malized complex frequency; f is the normalized frequency; k
is the cutoff steepness, fl i s the boundary frequency of the pass band and f2 the
boundary frequency of the cutoff band. The arrangement of the roots in plane z
becomes particularly clear if potential analogy is used. In his previous work,
the author showed that the equi-attenuation lines in plane A correspond to equi-
Card 1/6

262U
3/106/6()/WO/003/()03/003
Determination of the roots of the characteristic .... A055/A133
potential lines in an electrolytic tank, and that equiphase lines correspond to
current lines. The roots of the polynomial g (A ) are located in the intersec-
tion points of the equipotential line U = AN with the mean current lines starting
from each electrode. In the case of a Zolotarev fraction, the mean current lines
are parallel to axis y and the equipotential line U = AN is parallel to axis x.
The purely experimental method of determining the roots of the polynomial g (A
such as it is described by Boothroyd, proved very labor-consuming and insufficiffitr
ly accurate. The author suggests, therefore, an analytical approximate method
based upon the following postulates: 1) In plane z, the characteristic line is
considered a straight line and is, therefore, determined by two points (0, y )
,2), corresponding to the characteristic frequencies EN
and (K, y and 92N. 21 The
equiphase lines interEeot, the characteristic line and the x-axis at right angles
and are consequently assimilated to circle-arcs with the center located in the
intersection point of' the prolonged characteristic line with the x-axis. The in-
tersection points with the x-axis of the equiphase lines on which the roots of
the polynomial g (A ) located are the zeros of the Chebyshev fraction. The char-
and 2N at which the attenuation of the comparison
acteristic frequencies 2:N
filter is equal to AN can also be easily determined. The determination of the
ordinates.y. and y. is particularly simple if potential analogy is used. The
Card 2/6

SOR160100 0/003 /0 03 /00 3
Determination of the root's of..the characteristic.... A055/AI33
slope of the characteristic line is determined by I tg Y . * , A Y = Yz - Ya , (3)
where K is the full elliptical integral of the first kind with modulus k. The
shift of the abscissae of the roots of A with respect to the zeros of the Cheby-
shev fraction x is A xv = Rv - R. cos I , (4) where R, = a + (K - x0j, (5).
Substituting the radius of curvature R. in (4), the author obtains:
AxV = K(l - cos W)(L9 + I - 'o, (6)
AY K
The coordinates of the roots of the characteristic polynomial in plane z are de-
XV
termined by the following formulae: xv = xov + A xv, (7), Y, = Y2 + A y (I - K-)
(8). This method can be named the "three points method". Substitution of the
thus found values of the coordinates zV = x. + i y. in (2) results in: A, =Z, +
+ i A, = i sn (x, + i y1o, k)y (9). Starting from this formula, it is easy to
obtain the roots of the polynomial g (A ):
on x dn x sn 3r m y (10); sn x dn y
cn2y + (ksnxsnyP' ` cn2 y + (k sn x sn YF
,,however, a labor-consuming interpolation and are,
Formulae (10) and (11) require
therefore, difficult to use. Using transformations, the author obtains:
ZO = -~I~ bV S ev (12)
+ ay v + a-v
Card 3/6

26211
3/106/60/0r,0/003/003/003
Determination of the roots of the characteristic.... A055/A133
where S., = sn (X,., k), T,,= tn (y-4 k'), (13); av - k2 T2 S2
IV V, b,
~S'-2)) k2 S2), (14); c. 2)(1 + k2 T2), (15). Scan be
IV IV -01 + Tt V
expressed in terms of the Chebyshev fraction zeros 20., and T. in terms of T-N
and 2 N with the aid of the following formulae (derived by the author in an a R-
V N - Ta) v
pendix to the article): Sv Ov + A X bo (16); Tv = 7, 17.9
(17),' where b0, = V(1 - 2 8,)(1 - k2 2 8j, (18); T.Q (19)
1 - k ~formulae
The roots of polynomial g (A ) can thus be determined with t e aid o
(12) if the following magnitudes are known: the zeros of the Chebyshev fraction
20, , the characteristic frequencies; 7
.~N and QN, and the abscissae shift Ax,
in plane z [calculated with formula (6)j. The accuracy of formulae (12) depends
on the magnitude of the shift of the attenuation poles from "iso-extremal"
position. When this shift is equal to zero, 6x, = 0; S, Afov; Tv = IN, and
formulae are obtained'that are accurate for cases when the filtration function is
a Zolotarev fraction. It is possible to simplify the above derived formulae by
eliminating LxV from (16) and x, from (17). Resorting to the relation:
XV n - (2 v - 1 (21)
n
Card 4/6

26211
S/106/60/000/003/003/w3
Determination of the roots of the characteristic .... Ao55A133
where n is the power of the Cheb~shev fraction, and substituting (21) in (17), the
author obtains:
T T n - (21 (22)
0 V IN N - n
The correction,&x-, b OV in (16) does not represent more than I - 2 %; therefore,
it is possible to state that: S'--QOV. Taking all'.this into consideration, the
author writes the simplified formulae for the determination of the polynomial roots
as fol,lows:
= - T bOV
where; 'EV 09 1 + a0.0
a = k 2T2 91 2 (24) and
N 01 010
a0-0 (23)
OV 1 + so V
C + T2 ) (I + k 2 T2 (25)
0, (l Ove OV
Having established these formulae, the author applies them in a numerical example,
and, finally, draws the following conclusions: When approximate formulae (23) are
used for the calculation (with the aid of a slide-rule), the error varies within
0.5t5 % depending on the degree of the irregularity of the conditions set on the
Card 5/6

26211
S/106/60/000/003/003/003
Determination of the roots of the characteristic .... A055/A133
operating attenuation in the cutoff-band of the filter. When this irregularity A
is below 0.05, the roots must be calculated using formulae (12) (with the aid of
an arithmometer) or formula (10) and (11) (with the aid of elliptical function
tables). If the irregularity is large, the error with formulae (12) can reach
I - 3 %. In that case, it is necessary to render the determination of the roots
more precise resorting to one of the well-known methods, for instance to that des-
cribed by Cauer [Ref. 6:"Theorib der linearen Wechselstroms*&tungen", Berlin,
1954). There are 4 figures and 7 references, 4 Soviet-bloc and 3 non-Soviet-bloc.
The 2 English language references are:. Boothroyd. "Design of electric cave filters
with the aid of the electrolytic tank." Proc. IEE., part IV, oct. 1951. Spenoely.
Smithsonian elliptic function tables. Washington, 1947,
SUBMITTED: June 27, 1959.
card 6/6

81379
S/108/60/015/05/07/008
~.3~-3o B007/BO14
AUTHORs Ufallman, A. F.
TITLEa Synthesis of Electric Filters According to the Operating
Parameters and With the Aid of Zolotarev's Fraction
PERIODICALt Radiotekhnika, 1960, Vol. 15, No- 5, pp. 64-72
TEXTs The method of calculating filters according to the operating
A
parameters and with the aid of Ye. I. Zolota evIs isoextreme functions
was developed by S. Darlington (Ref. 1) in 1939. Because of its complexity
this method has not been applied. A. Grossman (Ref. 2) used the series
of the 4-functions to eliminate the elliptical functions from Darlington's
formulas. Howeverp also these formulas proved to be very extensive. The
author of the present paper suggests simpler formulas for the calculation
of filters The special functions were eliminated by using E. Glowatzkils
tables (ReL 3). Thusq work could be largely reduced as compared to
A. Grossman's formulas. Formula (1) is written down for the attenuation
of some reactance four-terminal network consisting of linear lumped
elements (Refs. 19 4, and 5),
Card 1/3

81379
Synthesis of Electric Filters According to S/108/60/015/05/07/008
the Operating Parametemand With the Aid 13007/BO14
of Zolotarble Fraction
04111
e2A = 1 + IT12, A lnj S1 - attenuation, S transmission coef-
ficient, h(Q filtration -function, f, g, and h real polynomials
f ( ?L)
of the complex frequency X = a + 161 . If f, g, and h are known, it is
possible'to find all parameters of -the reactance four-terminal network
and to determine its circuit. The electric filter is set up according
to the attenuation in the following way: A filter circuit with the
least number of elements is to be foundq and the elements are used to
prevent the attenuation from exceeding the rated value of A max within
the range of transmission and from falling below the rated value of Amin
within the attenuation band. The three parts of the problem are enumerat-
ed: 1) determination of the filtration function
I = h 9 2) determination of the roots of the characteristic polynomial
f
9(A); 3) determinaticn of the filter circuit from the resulting polynomials
Card 2/3 ~)r

Synthesis of Electric Filters According to
the Operating Parameters and With the Aid
of Zolotargv's Fraction
81379
S/10 6o/ol5/05/07/008
B007%O14
f, g, and h. Next, the author describes the calculation of a standard
low-frequency filter from which filters of the upper frequencies and band
filters are obtained by ineans of frequency transformation. This calculation
is illustrated by an example. It requires about as many operations as
the calculation according to the characteristic parameters, but the
quality of the filters is considerably improved, Mention is made of the
Zobel filters and the general methods by P. L. Chebyshev. There are
2 figures and 13 referencos: 7 Soviet, 4 English,.and 2 German,
SUBMITTED: may 4, 1959 (initially) and
May 21, 1959 (after revision)
Card 3/3

-IJJQPMMI, A.F. ----
---
Scientifically based study programs for traicing specialists in the
field of radio engineering. Izv. vys. ucheb. zav.; radiotelch. 3 no.4:
520-521 Jl-Ag 160. (MM 13-:101:
1. Kafedra, elektroavyazi Urallskogo elektromekhanicheskogo institute,
iuzhenerov zhelezao-dorozhnogo trunsporta.
('.Radio--Study and teaching)

KAMINSKIY, Yu.N.; PULTAN111. D.Y.; MENZHINSKIY, Ye.A.; IVANOT.I.D.;
SERGEYET, Tu,A,; IMSTYUKRIN, D.I.; DUZUKIN. A.R.; ITANOT, A.S.:
JUOGENOT, V.P.; =11WATOV, K.I.; SMI)KIN. R.G.; DUSHENIKIN, T.H.;
BOGDANOV, O.S.; SHMOVA, L.Y.; GONMLAROV, A.W.; IIAMIR, G.I.;
tTUBSKIT, M.S.; PUCHIK, Ye.P.; SEROVA, L.V.; KAMENSKIT, R.N.;
SABBLINIKOV, L.V.-, FEDOROT, B..A.; GERCHIKOVA, I.N.; K.ARAVATEV, I.P.;
KA OV, L.N.; SHIPOV, Yu.P.; VLADIM IT, L.A.; KUTSEMOV, A.A.;
RTIBININI, S.D.; ANANITEV, P.G.; ROGOV, V.V.; BELOSHMIN, D.K.;
~EIFU 5MULTUKOV. 1.M.; PARMOV, A.Ts.; SHIRNOV, VO;P.; ALEKSETU,
A.F.; SHIL11KRUT, 'T.A.; CHURAKOV, V.P.; BORIBEHO, A.P.; ISUPOV, T.T.;
OBLOYA, N.V., red.;: GORTUMOVA, V.P.,red.; BELOSHAPKIN, D.K., red.;
GXORGITEV, Te.S.irvd.; KOSAREV, Te.A., re'd.; KOzgj:iu IN, D.I., red.;
MATOROT, 2.V., red.; PANKIN, M.S., red.; PICHUGIN, B.M., red.;
PCLYAKIN, D.V., red..; SOLODKIN, R.G., red.; UFIMOV, I.S., red.;
MMN, P., red.; SKINNOV, G., tekhn.red. - "
(Economy of capitalist countries in 19571 Ekonomika kapitalisti-
cheskikh strap v 19.57 godu. Pod red. N%V.Orlova, IU.N.Kapelinskogo
i V.P.Goriunova.- M,3skva, I,zd-vo sotsiallno-ekon.lit-ry, 1958.
686 p. - (MIRA 12:2)
1. Moscow. Nauchno-issledovatel'ski.7 kon"yunkturnyy institnt.
(Economic conditions)

POTEKHIN, I.I., glav. red.; BATULNOV, A.N., red.; -BELYAYEV, Ye.A., red.;
GELLER, S.Yu., red.; GRAVE, L.I., st. rULUchnyy red.; GRIGORIYEV,
A.A., red.; GWER, A.A-1 red.; KULAGIN, C.D., red.; MALIK, V.A.,
red. MANCHKHA, P.I., red.; MTLOVANOV, I.V., red.; NERSESOV, G.A. ,
red.; OLIDEROGGE, D.A., rod.; ORWVA, A.S., red.; POPOV, K.M.,
red. ROZINY M.S., kand. ekon. nauk, red.; SMIRNOV, S.R., red.;
UFR!OV, I.S,, red.; SHVEDOV, A.A., red.; YASTREBOVA, I.P., red.;
PAVLOVA, T.I., tekhh. red.
[IAfrica; encyclopedia] kfrika; ontsiklopedicheikti spravochnik'.
Glav. red. I.I.Potekhin. Chleny red. kollegii: A.N.Baranov i dr.
Moskva, Vol.l. A - L. 1963. 474 P. (MIRA 16:4)
1. Sovetskaya entsiklopediya, Gosudarstv-ennoye nauchnoye izdatell-
Btvo' Moscow.
(Africa-Dictionaries and encyclopedias)

UFIMrSEV, A.M., inzb.
Testing of water-wbeel generators. Zlek.sta. 29 no-5:49-51 M,- '58.
(Electric canerators-Testing)
Y~41

UMMIN I AM, Im"ll.
Increase of hydrogen pre-z-atrea in TV2.-100-2
-turbogenerators. Enezgetik 10 nol-.19-22
(Turbogenerators)
and TY-50-2
Ja ;62.
(MIRA 14:12)

UFII-7rSEV, A.M., inzh.; LEBEDEV, A.T., inzh.
Testing of turbogenerators in asynchronous operation. Elek.
sta. 33 no.8:28-32 Ag 162. (MIRA 15:8)
(Ttirbogenerators-TfBsting)
T

UFIWSLYr A.M,, inzh.
Results of testing TVF-200-2 turbogenerators. Elek. sta. 34
no.8.-67-69 Ag 163. (MIRA 16:11)

S/139/60/000/03/042/o45
AUTHORS: Voroblyev, A.A., Savintsev, P.1?324�3~~,mt
a sev, B.F.
TITLE: The Ionisationl~otentials of Atoms an'~~-th,_Mutu,l
Solubility of Metals
PERIODICAL: Izvestiya vysshikh itchebnykh ztvedeniy, Fizika,
1960, No 3, pp 233 - 2~;4 (USSR)
ABSTRACT: Depending on the type of interaction between the
components, fused metal's can form various types of
alloys, e.g. eutectic mixtures, solid solutions\~or
chemical compounds. It is well known that there is
a definite periodicity in the ionisation potentials
of elements, cbpending on their position in the per .odic
table. It is argued that intermetallic compounds.Zre
1buncd whon the ionisation potentials -of the two metals
are consiO,~rably diffei-Cht. Convorsely, in the case of
eutectic alloys, the ionisation potentials of the
components are roughly the same. SoLlid solutions are
formed when the difference between the ionisation
potentials of the components approach a certain average
value. These ideas aro illustrated in Table 1, in which
Cardl/2 eutectic alloys are shown on the left and solid solutions
~~c

The Ionisation Potentials of Atoms and the Mutual Solubility of
Metals
on the rigbt. y I and ~)2 are the ionisation potentials
and A- (p is the diff erence between them.
There are 1 table and 2 Soviet references.
ASSOCIATION: Tomskiy politekhnicheakiy institut imeni S.M. Kirova
(Tomsk Polytechnical Institute imeni S.M. Kirov) -
SUBMITTED: October 26, 1959 k----c
Card 2/2

SAVINTSEV, P.A.; UFIMTSEVp B.F.
Contact melting of multicomponent organic systew. Izv. TPI
105t215-217 160, (MML 16:8)
1. Predstavleno nauchnym seminarom radlotekhnicheskogo fakullteta
Tomskogo ordena Trudovogo Krasnogo Znameni politekhnicheiskogo
instituta, imeni Kirova.
(Melting)

UPIMTSEY, F.
Great changes, Mast#ugl. 5 no.4:10-12 AP 156. (KrRA 9: 7)
1.Xachallnik Bachatskogo raxroza kombinata Kuzbassugoll.
(luznetsk Basin--Ship mining)

UMITSENJI G. N.
Proycktirovaniye Dromyshlennykh predpriyatiy (Designing Industrial enterprises)
flosk,ia, Gos. Izd-vo Literatury po, Stroitellstvu i Arkhitekture, 1952.
198 p. illus., diagrs., tables.
At head of title: 14. L. Zaslav, V. N. Zlatolinskiy, A. E. Levinson, T. G. Petrova,
G. N. Ufimtsev, P. U. Frenkel.
N/5
748.11
.F8

Uflt-%T~F-V, G--N
POLUKOV. D.L., inzhaner, redaktor; BATURIN, VA., kandidat takhnicheskikh
nauk, redaktor; BORISOV, V.P., inzhener, redaktor; GOVOROV, V.P., insho-
nor, redaktor; HATS, YaX, inthener, redaktor; RTYKIN, Kh.I., kandidat
tethnichaskikh nam , redaktor; TUMWS, V.A., doteent, redaktor; KORSA-
KOV~ S.S.. retsenzent; UPIXTSET, G.N., retsenzent.
[Manual for planning heating and ventilation systems of Industvial
enterpriessl. Spravochnik po proaktirovantin otoplealia i ventiliataii
promyshlennykh predpriiatii. (Radkollegita D.L. Poliakov i dr. Redaktor
V.A. Turkus] Moskva, Goo. izd-vo lit-ry po stroltelletvu. I arkhitektwm,
1953- (MLRA 7:6)
1. I*ningrad.P1-oy9ktnyy institut ministerotya stroitelletya.
(31eating-Handbooks, manuals, ate.) (Vantilation-Handbooks, manuals,
etc.)

KISSIU, Mikhail teakovich,*doteent, kandidat taklmicheskikh nauk,[deceased];
MAZO,A.V., inzhener, retsenzent; UL'YANINSXIT,S.V.,, professor, dok-tor
tekhnicheskikh nauk, retsenzent; UFDfrMffG.N., lw:hener, retsenzent,
reduktor; GOLUBMOVI,L.A., redakI`oFr"RV"'WL.Y&., tekWchaskiy
redaktor
[Heating and ventilating] Otoplanie I ventillateiia. Izd.2-oe, parer.
Moskva. Gos.izd-vo lit-ry po stroltel'stvu i arkhitekture. Pr.l.
[Heating] Otoplenie. 1955. 390 P. (MIRA 9:3)
(Heat engineering)
.5
A

KYUBL&R. O.A., inzh., red.,- UPIRTSEV, G.N., inzh., red.; CRIGORI
P.G., red.; TCV, 0., re A.P., red.izd-va;
BOROVIW, U.K., tekhn.red.; SOIJITSWA, L.M., takhn.red.
[Unified standards for planning and survey work paid by a piece-
rate] Edinye normy vyrabotki na proelctnye i izyskatellskie raboty,
oplachivaemye adellno. Moskva, GosAzd-vo lit-ry po stroit., arkhit.
i stroit.materialam. Pt.Z. [Industrial buildings and struntures] Pro-
myshlennye zdaniia i sooruzhaniia. 1958. 86 p. Pt.4. (Interior sani-
tary-ongineering installations for buildings and structures] Vnut-
rennie sanitarno-tekhnichoskie ustroistva zdnnii t nooruzhenii. 1958.
50 p. Pt.5. [Making estimates] Smetny'a raboty. Pt.6. [Blueprinting]
Kopirovallnye raboty. 1958. 44 p. (MIRA 12:12)
1. Russia (1923- U.S.S.R.) Gosudarstvannyjr komitat po delam stroi-
tal'stva. (Building-Production standards)

BELOUSOV, Vladimir Vladimirovich,, inzh.; MIKHAYLOV, Fedor Somenovich,
inzh.; SMIJIMV, L.I., inzh., nauchnyy red.; UFIMTSEV, G.N., inzh.,
red.; SAFONOV, P.V.., red. izd-va; RODIOUOVAT "..p-te-khm. red.
[Principles
ektirovaniia
izdat, 1962.
of the design of central heating
sistem tsentralinogo otopleniia.
401 p. (Heating)
systemD]Oonovy pro-
Ifookvii, Go-stroi-
(14IRA 15:12)

KISELEV, G., mayor; TOPILISKIY, V., mayor; GLUSHUS, I., starshina;
UFIMTSEV,,..I., kapitan; PROKOPIYEV, G., afirshly ieytenant;
DEREVYANKO, U., leytenant
How do you train ftdiotelegraph operators?; discussion
of the article published in No.l. Voen. vest. no.3:
101-103 Mr'64. (MIRA 17:5)

SUD-ZLOCHOBUY, A.1 r.Sud-Z-Lochev-sllcrl A.I.]V~R-Lycvh
UFIRTSV, I: G.-(UfintsevP ICHO) wn
Method for optimizing a transient procaas ia a serroeystem
with an as-Allatory drive of the third or-der. Avtomatyka 8
mo.&3-10 163. (KRA 17% 8)

POLWHCMK,V.Ye., kand. istoricheskikh nauk, doteent, mayor; K1JSH-
MOY,P.I., podpolkovnik; YAKOTM,V.N., kapitan 2-go range;
I14ITRIYEV.V.A., kapitan 3-go rangn; UFIXTSET.L.Ye.,red.;
MIRKISHIYET.A.S., takhn.red.
(The fighting nnd revolutionary trnditions of the sailors of
the Red Banner Caspian Fleet] Boevye i revoliutsionnye tr-nditsii
moriakov Krasnoznamennoi Kaspliskoi flotilii. Baku, Azerbaid-
zhanskoe gos. izd-vo. 1960. 178 p. (MIRA 14:5)
(Russia-11avy)

UFIMTSEV) No,*) TREMKIIIN) O.K.
At the electrified,a.c. sections of the Yrasnoyarsk rail-road. Elek.
i tepl. tiaga 5 no.3:28-25 Mr 161. QMMA 14'.-6)
1. Nachallnik distantsii ~pntaktnoy seti 9t. Bazaikha (for Ufimtsev).
2. Nachallnik Krasnoyarskogo uchastka onergosnatzheniya (for Trenikhin).
(Electric railroads) .

UFIMTSEVY N,1~ ';C, I _-inzb.
Some methods of work on the a.c* cr7erhead contact system,
F-lek.i tepl.tiaga 6 no./+:10,-Il Ap 7,62. (MTRA 15:5)
(Electric railroads. -4fidntenance and repair)

UFIMTSEV, F. , in7hener.
Motortrucks at the 1--d Internatiozml Fair In Damascus, Avt.tronan.
.15 ne.6:37 Je '57. (Vt? A I ~): 7)
(I)Anascue--Faira--~lotortrucks,I

V
AUTHOR- Ufimtsev, F. Ya. 57--8-27/36
TITLE: An Approximative Calculation of Diffrriction of Plane Electro-magnetic
Waves an Sam Metallic Bodim I. W3dge and BaW DUMmcbDn Ohbli2tazw rMCIT-t
diffraktaii ploskikh elektro-magnitnykh voln na nekoto kh
me tall i cheskikh telakh. I Diffinktsiya na kline i lent~e
PIMIODICAL- Zhurnal Tokhn.Fiz. 1957, Vol 27, Nr 8, pp 181vO-i8)79('JSSR)
ABSTRACT: Approximate methods are of great importance as the exact solutions
of the diffraction problems for complicated bodies meet with
great mathematical difficulties. The author starts from the idea
that a field diverged by the body can be taken az a sum of two
current components flowing on the surface. The one component is
the uniform one which obeys to the la,,m of geometrical optics, the
field of which can be found by means of quadratures, and which re-
presents the so-called Kirchhoff approach. The nonuniform component
is that current which is added to the uniform one in cormection
with the surface curvature. In the case of convex bodies the non-
uniform component can be assumed on a sufficiently small element
of the convex surface in the neighborhood of the break and
approximately equal to that of the correspo-ding dihedral angle
(wedge). The diffraction is investigated with a viedge and a band,
either of them perfectly conductive, and an approximate calcula-
tion of them is carried out. The method given here can also be
Cara 1/2

57-8-27/36
An Approximative Calculation of Diffraction of Plane Electro-
magnetic Waves on Some Metallic Bodies. I. I-ledge and Band
Diffraction.
used for wave lengths which are by far smaller than the
measurements of linear bodies, and this also in the ca--e of a
sufficiently great distance from the bodies. There are 9 figures
and 2 Slavic references.
SUBMITTED: July 30, 1956
AVAILABLE: Library of Congress
Card 2/2

AUTHOR: Ufimtsev, P. Ya.
TITLE: -` SecondaryDiffracitionof Electromagnpl-4-
.- Waves on a Band
(Vtorichnaya diffraktsiya elektromagnitnykh voln na lente)
PERIODICAL: Zhurnal Tekhnicheskoy Fizik-*L, 1958, vol. 28, Nr 3,
Pp. 569-582 (USSR)
ABSI?-ACT: The approximation method for solving the diffrw~tion problems
earlier developed in references 1 and 2 is precisely defined
here. The so-called effect of the secondary diffra-,tion, i. e.
the interaction of currents floyring in the different elements,
of the body surface is taken into account here. The dispersing
object can be approximated by a number of sour,~es - luminou-3;
lines and points~ Theproblem posed here consists in the fin=
ding of those functions which determine the continuou-9 modif-J=
cations of the field of each of "hose sources on transition
through the corresponding light-shadow-boundary. This p.~,oblem
is here investigated in application to the simplest body- a
band - and more accurate formulae for the dispersing field are
Card 1/2 obtained. In the ca3e of the diffraztion on a band the part

Secondary DIffractionof Electromagnet_',~ Waves on a Band
played by the abov-s--nentioned interaction is most essential
in the direction- of observation near the band-plane as -nell
as in the case of grating incidence of the irradiating wave.
Approximation formulae for the field dispersed by tM band are
derived which are useful for any dirrentions of radi-?tiorn and
observation. Computation:-- of the dispearion chara~tez_-45tir~s
according -to the exact and the apprcxL-Pation- the~D7y are perfor=
med and then a compa-_-ison of the t-g* is given, The re8ult3 5ho-If
a satisfae-vory ageemeah betmrean the approxi_?nat_-.:)--~ metn,.-d ard the
exact theory already at kn- = V28, although in th"; i~a&=_ orly about-
two and a half wave longths. bone to lie on th~? wirjt.)~ of bard.
Tha vor~ war; c~,uidnfl. by L. I"%. 'Alynshtayn.
There are 13 figurez, and 4 referen--Oea, 3 of which are
SUBMUTTED: March 25, 1957,
1., E16cLromagnetic wave.,3--Diffraction 2. ElecLromagretllc dc-iv,--s
--Electrical factors 3. Mathematics
Card 2/2

UFIMTSEVI.,P.Y&.
Approximate calculation of the diffraction of plane electromagnetic
waves on some metallic surfaces. Part 2: Diffraction on a disk and
a finite cylinder. Zhur. tekh. fiz. 28 no.11:2604-2616 N '58.
(MIRA 12:1)
(Electric waves--Diffraction)

AUTHOR: Ufimts ev, P. 'Ca.
57-28--5-22/33
TITLE: Secondary Diffraction of hlectromanetic Waves on a Disk
(Vtorichnaya diffraktsiya elektromagnitnykh voln na diske)
PERIODICAL: Zhurnal Tekhnicheskoy Fiziki, 1958, Vol. 28, Nr 3,
Pp. 583-591 (USSR)
ABSIRACT: The approximate solution of the diffraction problem for a
disk found earlier (reference 1) is.precisely defined here.
The interaction of the boundary currents is approximately
taken into account here. Equations for the field dispersed by
the disk are derived. The dispersion characteristics are com-
puted and compared with the results of the exact theory and
those of the experiment. A satisfactory agreement- with the ex=
periment is determined. The taking into account of the interac=
tion of the boundary currents precisely defines the approxima=
tion given earlier and is in better agreement with the exact
theory.
The work was guided by L. A. Vaynshteyn.
Card 1/2 There are 6 figures, and 3 Soviet reftrences.

Secondary Diffraction of Electromagnetic Waves on a Disk 57-23-3-22/33
SUBMITTEDO. March 25, 1957.
. .. 1:, 1. : .i. -Ele'~tiomagn6tic -4aves-Diffraction 2. Mathematics
Card 2/2

20410
S/109/60/005/012/008/035
OV300 E032/E5i4
AUTHORS. Mayzells, Ye, N. and Ufimtsev. P,. Ya,,
TITLE~ Reflection of Circularly Polarized Electromagnetic Waves
from Metal Bodies
PERIODICALx Radiotekhnika i elektronika, 1960,. Vol-5, No.12,
pp~,1925-1928
TEXT-~ The Kirchhoff method is frequently used to treat the
reflection of electromagnetic waves by metal bodies, According to
this method the scattered field is produced by a surface current
given by
r nH
L
where c is the velocity of light in v; is the outward
,,~cuo,n
normal to the surface of the body and H is the magnetic field of
the incident wave. Physically Eq.(I) means that at each element of
area on the "illuminated" --itjrf~' ce the current is considered to be the
at
same as/an inf.inite,perfectly conducting plane tangent to the given
element, However, this formula does not take into account
additional currents due to the curvature of the surface. Any real
surface current must be looked upon as a sum of the "uniform"
Card 1/3

20 h 10
S/109/60/005/012/008/035
E032/E514
Reflection of Circularly Polarized Electromagnetic Waves from
Metal Bodies
current component given by Eq.(l) and a "nonuniform" component due
to the curvature. The Kirchhoff approximation must., therefore,
be abandoned whenever the nonuniform component is of interest, The
second of the present authors has developed methods which could be
used in this connection. In many cases, however, a direct calcula-
tion 1,s difficult and it is, therefore., desirable to develop a
method which could be used to measure the nonuniform component of
the scattered field directly. It is shown in the present paper that
such measurements can be carried out for rigid bodies of revolution
with the aid of circularly polarized electromagnetic waves,. It is
shown that when such bodies are irradiated with circularly polarized
electromagnetic waves, the nonuniform components in the scattered
field can be separated out with the aid of a polarizer. Numerical
calculations have been carried out for a flat disc having a
diameter of the order of the wavelength. The numerical calculations
(Fig-3) were found to be in good agreement with experimental results,
The discrepancy between the two curves is partly due to the fact that
Card 2/3

2041n.
s/iog/60/005/012/Oo8/035
E032/E514
Reflection of Circularly Polarized Electromagnetic Waves from
Metal Bodies
in the experimental part a truncated conical specimen instead of a
disc was employed, There are 3 figures and 3 Soviet references,
SUBMITTEDz March 26, 1960
Card 3/3

22893
s/log/61/oo6/004/007/025
c/, 2700 E032/E135
AUTHORs Ufimtsev. P.Ya.
TITLE: Symmetrical Irradiation of finite bodies of revolution
PERIODICALi Radiotekhnika i elektronika, Vol.6, No.4, 1961,
pp. 559-567
TEXT: The diffraction of electromagnetic waves by perfectly-
conducting finite bodies with surface discontinuitite is of
considerable interest but, in view of its complexity, has not so
far been fully investigated. In the case of radio waves whose
wavelength is short in comparison with the linear dimensions of
the diffracting object, it is usual to employ the Kirchhoff
approximation. It is stated that this approximation frequently
leads to incorrect results and should be improved. In the special
case of convex solids of revolutionirradiated along the axis of
symmetry, the present author has found an improved approximation
for the effective surface (Ref.lt ZhTF, 1957, 27, 8, 1840, and
Ref.21 ZhTF, 1958, 28, 11. 260). The method employed in the
calculation has been described in the mentioned papers. The
scattered field is determined as a sum of "uniform" and
Card 1/ 4

22893
S/109/61/006/004/007/025
E032/E135
Symmetrical irradiation of.finite bodies of revolution
"nonuniform" components. The uniform component represents the
scattered field on the Kirchhoff approximation and is found to be
integrating the surface current
j1~ (7ng
27t
where: c is the velocity of light in vacuum; it is the output
normal to the surfacei and it in the magnetic field of the
incident wave. The nonuniform component is an additional field
due to the discontinuity and must be taken into account if one is
to obtain correct results, The theory developed in Refs.1 and 2
is now extended to the case of a cone and a paraboloid of
revolution (r2 = 2pz). The author calculates the effective
scattering surface of a finite cone and a paraboloid of revolution.
The linear dimensions of the bodies are assumed large in
comparison with the wavelength, with ideally conducting surfaces.
Irradiation is carried out parallel to the axis of symmetry.
The author finds that the shape of the body in the shadow region
influences the reflected signal to a distance of several
Card 2/ 4

22693
s/loq/61/oo6/004/007/025
E032/EI35
Symmetrical irradiation of finite bodies of revolution
vravelengths from the edge of the shadow. While the expressions.
found are in good agreement with experimental results, even for
large dimensions, they do.not pass into the formulae of physical
optics. At the same time they differ from the results of the
Kirchhoff approximation,'which does not agree too closely with
experiment. Thus, for example, Fig.4-shows a plot of log
effacitfive scattering area) as a function of the I
(a is the ength
of.the cone. The points are experimental and the dashed curve
represents the Kirchhoff 'a'5~ko-ximpLtion and the full curve the
present results., Acknowledgement s 'are c.xpr:essed to Ye.N. Mayzel's
-and L.S. Chugunova for theii~ assistance.
There dre 10 figures and 5 references: 2 Sovie,t and 3 non-Soviet.
SUBMITTED: April 28, ig6o
Card 3/4

30443
5/109/61/006/(,)12/018/020
D201/D305
AUTHOR: Ufimtsev, P.Ya.
TITLE: Reflection of circularly polarized radiowaves from
metal bodies
.rBRIODICAI: 11adiotekhnika, i elktronika, v. 6, no. 12, 1961,
2094 - 2095
TEXT: B.N. Mayzel's and P.Ya. Ufimtsevv-suggested (Ref. 1: Radio-
tekhnika i elektronika, 1960, 5, i2,, _L925) a method for measuring
the lirreguiarl component of'the field dispersed by metal bodies
of revolution. In the present short communication it is shown that
.this method may be applied for measuring the irregular field com-
ponent of the fieldq dispersed by metal objects of finite dimen-
sions o any shape. The system of coordinates is chosen so that the
normal k to the incident wave front, drawn through the origin be
in plane yoz asshovin in Pig. 1. It is easy to show that with E-
polarization (7 1 yoz) the current density induced at the body sur-
face by the incYdent wave is given in the Kirchhoff approximation
Card 1/&

30443
S/109/61/006/012/018/020
Reflection of circularly polarized ... D20i/D305
by sin 'r + n~ Cos-() i1r,
2:t E~- (nu
E. nc sin T ef'r,
E0. n. cos
2a
0,
H~.
(2)
_f C_i Ho~, nyeilr,
for an H-polarized wave (!to yoz) where C - velocity of light in va-
cuum; Eo. and Hox amplitudes of the el. and magn. components of
the incident wave for E and H polarization respectively; V = K(y'
Bin y + z' cos y) - the phase of the incident wave at point (XI, Y,
z1) at body surface; n., nyj n. - components of 'the normal to the
surface at the same point. The time dependence is assumed ti be
e In radio telemetryp when the direction of observation and
Card 2/0

8/109/61/ou6/012/016/020
Rbflection of circularly polarized D201/D305
zranamission usually coincide# (the spherical coordinates of the
point of observation being R, tR cp) so that 6f Vi yp (P Tr12,
expressions
E, HX - 0
E. R (3a)
2
IkR
L~~ , E. 11. = 0. (4a)
2
hold. The factor a in these expressions represents an arbitrary li--
near dimension of the body, and functions Z k and T_k are determi-
ned by
(n sinr+n,cOsy)e'OdS.
lh=- h=_L~
(5)
Thus the equality Z k Tk 's satisfied for any body shape and.
the method described in (Ref. 1: Op.cit.) has a general meaning
and permits isolation from -the field, dispersed,by a metal body.
There are I figure and I boviet-bloc reference.
SUBMITTED: June 10, 1961
Card 3/j,',

UFIMTSEV Petr Takoylevich., IVANUSHKO, N.D., red.; SVESHNIKOV, A.A.,,
tekhn. red.
(Edge wave method in pbysical diffraction theory) Metod kra-
evykh voln v fizicheskoi teorii difraktsii. S predial. L.A.
Vainshteina. Moskva, Sovetskoe radio, 1962. 21+2 p.
(MIRA 16:4)
(Diffraction)

3h491
S/109/62/007/002/010/024
0 D266/D303
AUTHOR: Ullatse LIA.
TITLE: Scattering of a plane electromagnetic wave by a thin
cylindrical conductor
PERIODICAL: Radiotekhnika i elektronika, v. 7, no. 2, 19629
260 - 269
TEXT: The purpose of the paper is to study the scattering effect
of a cylindrical conductor of radius a and length L. The direction
of the incident plane electromagnetic'wave is given by the angle
the polarization of the wave by a, (a = 0 if the electric vector
lies,in the plane of the paper)p the direction of observation by
The author's calculations are based on the following physical pic-
ture: The incident plane wave excites certain waves (called "edge"
waves) which are scattered on the opposite end of the conductor
and cause the excitation of secondary "edge" waves. These secondary
waves excite ternary waves, etc. The first order term is given by
the expression
Card 1/2

S/109/62/007/002/010/024
ScatterinE of a plane electromagnetic.. D266/D303
EO) H(1) E eikR FO (3)
CP kR
I mce of the point of observationt k = 23TIIAp~, - wave-
whcre It - 49
length and F_ (P-09~ff) can be determined by employing L.A. Vayn-
shteyn's variational principle (Ref. 4: ZhTF, 1961, 31, 1, 29).
Summing all the contributions up to infinity the resultant field
strength in the far field is obtained, The resulting formula is
lengthy and complicated, but two important conclusions can be imne-
diately dra~,m: 1) If L = n(1/2) resonance occurs; 2) The formula is
invariant in respect of a change of & and 601 This last property
follovis from the reciprocity theorem. The author claims that in
previous treatments - due to different approximations - reciprocity
vias not satisfied and his is the first solution which comes to the
correct result, There are 4 figures and 7 references: 5 Soviet-bloc
and 2 non-Soviet-bloc. The references to the English-language pub-
lications read as follows: K. Lindroth, Trans. Roy. Inst. of tech-
nol., Stockholm, 1955, no. 91; J.H. Van Vleck, F. Bloch, M. Hamer-
mesh, J. Appl. Phys., 1947, 18, 3, 274.
SUBMITTED: June 10, 1961
Card 2/2

0
UFIMTSEV, . IYa,
Z-1- - - .. I.:%." .-, -
-, ~ 1~ .... 14 ~~ ;
Transverse diffusion during diffraction on a wedge. Radiotekh.
i elektron. 10 no.6:1013-1022 Je 165. 1 (WRA 18:6)

L 22931-66 Elg(m)/EWP(t) lip(c) -7 JD1.'M
ACC NRs AP6013343 SOUFCE CODE: UR/0363/66/002/004/0657/0658
AUTHOR: Fistul', V. I.; OmellyanovBkiy, E. M.; Pelevin, 0. V.; Uf1mtsev, V. B.
J7
ORG: Giredmet B
TITLE: The effect of the nature of dopant on electron scattering and polytropy of
dopant in n-type gallium arsenide
_1A 10
SOURCE: AN SSSR. Izvestiya. Neorganicheskiye materialy, v. 2, no. ~, 1966, 657-658
TOPIC TAGS: gallium arsenide, single crystal, semiconductor single crystal, activated
crystal, donor impurity, electron mobility, carrier scattering, Hall mobility,
impurity polytropy
ABSTRACT: Ilie nature of the dopant was found to influence the electrical property of
gallium arsenide single crystals doped with Te, Se, or S in widely varied concentra-
tions in a manner analogous to that observed earlier in strongly doped semicondcutor
Ge and Si. Single crystals were grown by an oriented crystallization technique under
conditions which secured uniform distribution o.f impurity. Hall mobility at 300K was
f ound to decrease in the sequence .' uTe > use > ui with increasing electron concentration-
in the sample. In agreement-with'th'eory ihis jattern of change in electron mobility
reflected the effect of the nature of the dopant on scattering of electrons. Another
effect of the nature of the dopant was detected in a study ef the relation between
electron concentration and atomic concentration of the dopant, as determined by

L 22911-ht)
AFbUIJJ4J
chemical analysis. This effect was described as polytropy of impurity (dopant), i.e.~
the appearance of a part of impurity atoms in the crystal in a form, probably as a
near order complex, deprived of the donor property. The polytropy was increasing in
the sequence Te < Se < S at equal atomic concentration. Orig. art. hasi 2 figures.
[JK]
SUB CODE: 07/ SUBM DATE: 090ct65/ ORIG REFI. 002/ OTH REP.- 004/ ATD PRESS-
~123

UFIMTOIEV V D Dnd KOZLOV 1. YB.
A- - * t~w
"Cheracteriestics of the Heat Treatment of Cast Paloys to Be Used for Perman-
ent Magnets." From the book, "Heat Treotment and Properties of Cast Steel."
edited by N. S. Kreshchanovskiy, Mashgi,,,,, Moscow 1955.

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00 "j;; 'I"tell slmh `11'
1xisitions; he believed In a nillitlithlY 14
00 A tanrcs mud the ccunplex coulptis. %,I WMI, VoI1114'. 1 hu,.
p-DiNfIC4114011 still PAN"i'*011.4:0,01111,
go 410%~4iKlvw tile (tilt J 11110 lit tile 1,1A -off
tile Idtirr lievall" "Millml,
Air tlWally4lid-WIC.A.
frill. is 11K.1 It"trad (if tile I'll 1111,Wu., MiM. 14n 0
%efvrd in allariwO of the usual. -$A-allrit
Is-Ainiroactitaphlbetir (1:18 s,), 3-7) 9.
00 13 Asid 25 cv. pyrithur *vv heal"I its 1W bn U, Mill'. 11'.
I
00 J i$&&- w4. 1111141, by &W IN. 11,41, llir.11111 %Al, 11,111.1d
411.1 rect"I'l. III"" Floll Orld"IN ;it it
00 ~SRI W, go 0
00 A Autinollut~rrtv (3 62 R - 1. 3 - 1-1 9 - P-(hl% C-1 1 L*')C 1 Seb 1 a*
cv. pyndine weir bmictj to tjoiling, fifirr"I Simi ifild. .111,
00 101.1 IV. HIM. yiel'Itul 3M it. are
A, 00
pyridinc bw 111111611 , Alul Ilm. .411, 111.1 .,It,
See
S. . Ill 1.
Is IV. litoll, yichfinx I-Irl .5 1
(ju), 11161.2 1 n it-iiirow). see
AtTlinollulmrnt 01-9 9.), 2 lt~') PA"C""C"'Cl 1411"
4 ie. pysullno were reauxill IM 10 Mla,. 111` -411- 1111-1 *1111 t:o
a'V!-4~ W cc, 10011, OvIllittil I ;M C
lit ~lfuorem* (1111. ni. 141.M-3 J* (0911" RtOll 1 1-4111111 Art'
AtIALLURCKAL LITINATU1119 CLA tntenwly yelhAv, While Ill 411111 IV INVIN infCabrly lilt, k lot tie o
A I a I L A -rhe coloc is apparently doe to the interacuml of the flitt'. tj 0
%)I 11rellaphiftene kiki 11WHOW.
xTotip %with nusatd M. K-lAt"T
all.
sd-i-f- a
Is a it 1% n it
Is e
0 0
0 o o 019 40 0 0 0 0000 0 0 0

let:
Is I ID is M V V 31 M A Is V 31 30 C 41 At U
1 1. L a H
F_ Q -It-"
00 A"
000 low one In the field ,ot as* dy"itafts. U- - islet, I "I _PtePvL'x ------
1 # formenva ~.Wubla ext; dyes. V. S. t'fitnevcv. J 2-amplithyl nwWwatt (4-11h S,), ID_ jjjl-l; Iwa~ filtered,
plied Chow. W. S. S. RJ 14, -J4c.olIhor%Ccrrn 10m.
iv.,* toluene Imams with I c