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IMPEDANCE VIBRATOR WITH ARBITRARY POINT OF EXCITATION

2008
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Progress in Electromagnetics Research B
*

0 δ(s + s δ ) = E s 0s (s) + E a 0s (s), E s 0s (s) =

doi:10.2528/pierb08022805
fatcat:dsfjyusysbctzlacoriv23nlsy
*V*0 2 [δ(s + s δ ) + δ(s − s δ )], (18) E a 0s (s) =*V*0 2 [δ(s + s δ ) − δ(s − s δ )], where E s 0s (s) is the symmetrical (E s 0s (s) = E s 0s (− ... Thus, the scattering field in the whole environment is fully defined by setting tangential components of the field on the S boundary of the*V*volume. ...##
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ANALYTICAL METHODS IN THEORY OF SLOT-HOLE COUPLING OF ELECTRODYNAMIC VOLUMES

2007
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Electromagnetic Waves
*

greater number of the considered electrodynamic structures the calculated values are compared with the results, obtained by numerical methods (also using commercial programs) and the experimental data. 80

doi:10.2528/pier06121203
fatcat:uw3d7b5nsnabjid3lrodmeowai
*Nesterenko*... { r*v*, E in sl }+ H*v*τ { r*v*, E ext sl } on S in , H*v*τ { r*v*, E in sl }+ H*v*τ { r*v*, E ext sl } = H ext τ { r ext , E ext sl } on S ext ( E in,ext sl ξ = E in,ext 0 f in,ext (s in,ext )χ in,ext ... The local coordinate system x*v*, y*v*, z*v*is introduced in this region.Let surfaces of waveguide section ends (z in,ext = 0) be generally characterized by different distributed impedances Zin,ext s of ...##
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IMPEDANCE SYNTHESIS OF PLANE DIFFRACTION VIBRATOR ARRAYS

2020
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Progress In Electromagnetics Research M
*

Then Equation (6) can be rewritten as E θ (θ, ϕ) = J 0 e −i(Nz+1)u/2 e −i(Nx+1)

doi:10.2528/pierm19080905
fatcat:tznzv3ews5ahbnwyyt27gf23ne
*v*/2f 1 (θ) cos θ sin θ Nz n=1 Nx m=1 e i(nu+mv) e −i[(n−1)Δu+(m−1)Δ*v*] . (8) As can be seen from the above formulas, Equations ... ϕ max ) is determined by the following relations cos θ max = Δu/k 1 d z and sin θ max cos ϕ max = Δ*v*/k 1 d x . ...##
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SYSTEM OF MATERIAL OBJECTS IN ELECTRODYNAMIC VOLUMES

2021
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Progress In Electromagnetics Research C
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The permittivity and permeability of medium in the volume

doi:10.2528/pierc20122301
fatcat:5iahqph3jbcfvdsptrkuvb5dp4
*V*are ε*v*1 , μ*v*1 . ... The volume*V*contains material objects enclosed in local volumes*V*m (m = 1, 2, . . . , M) bounded by closed smooth surfaces S m . ...##
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DEVELOPMENT OF FUNDAMENTAL THEORY OF THIN IMPEDANCE VIBRATORS

2016
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Progress In Electromagnetics Research M
*

Here

doi:10.2528/pierm15120105
fatcat:3qtntvs355gztnkzptltzaau4y
*V*0 is the voltage amplitude, δ(s − s 0 ) is one-dimensional Dirac delta function. Figure 1 . 1 The geometry of the vibrator structure. ... The volume integral is taken over the entire volume*V*(dv is volume element), and the surface integral is taken over the entire surface (ds is the area element in the primed coordinates). ...##
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MATHEMATICAL MODEL OF LARGE RECTENNA ARRAYS FOR WIRELESS ENERGY TRANSFER

2017
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Progress in Electromagnetics Research B
*

A mathematical model of a large rectenna array (LRA) is presented. It is shown that matrices describing the LRA linear subsystem have a number of specific features that must be considered when the rectenna mathematical model is developed. The state equation for the LRA was obtained. It is shown that the model functioning in nonlinear mode of the infinite rectenna array can be reduced to the parameters of one equivalent receiver-rectifier element (RRE) at the fundamental frequency and its

doi:10.2528/pierb17010503
fatcat:hqy7giowfbeahipz2p45pr5qjy
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... c. The external parameters of RREs and characteristics of LRAs were obtained.##
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WAVEGUIDE RADIATION OF THE COMBINED VIBRATOR-SLOT STRUCTURES

2020
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Progress in Electromagnetics Research B
*

Then, the final expressions for the currents based on Eq. ( 3 ) can be written as: J

doi:10.2528/pierb20052804
fatcat:zymoopvtujhvlnqmfoh4t2hryi
*v*(s*v*) = − iω 2k 2 H 0 J*v*f*v*(s*v*), J*V*(s*V*) = − iω 2k 2 H 0 J*V*f*V*(s*V*), J sl (s sl ) = − iω 2k 2 H 0 [J ... , r 1 = r 2 = r, α 1 = α 2 = α, 2L 4 = 2L*V*, r 4 = r*V*, α 4 = α*V*, ZS1 (s 1 ) = ZS2 (s 2 ) = ZS (s*v*) = 2πr*v*z iv (s*v*)/Z 0 , ZS4 (s 4 ) = ZSV (s*V*) = 2πr*V*z iV (s*V*)/Z 0 , k1 = k2 = k = k + i ...##
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Electromagnetic Waves Excitation by Thin Impedance Vibrators and Narrow Slots in Electrodynamic Volumes
[chapter]

2015
*
Advanced Electromagnetic Waves
*

*v*

*v*

*v*L

*V*

*v*

*v*s

*v*

*v*

*v*s

*v*i

*v*

*v*

*v*L

*v*k J s G s s s i E s i z s J s s we we - ae ö ¢ ¢ ¢ + = - + ç ÷ ç ÷ è ø ò (9) d d d d d d 1 2 2 2 2 2 1 2 0 2 2 1 2 1 1 ( ) ( , ) ( ) ( , ) ( ) ae ö ae ö ¢ ¢ ¢ ¢ ¢ ... For the arbitrary vibrator-slot structures and coupled electrodynamic volumes expressions for

*v*

*v*s

*v*

*v*

*v*

*v*L s a

*v*

*v*L s a

*v*

*v*s

*v*

*v*

*v*

*v*Energy characteristics Wavelength λ, mm Z S1 =ikr 1 ln(4.0 ...

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THE ASYMPTOTIC SOLUTION OF AN INTEGRAL EQUATION FOR MAGNETIC CURRENT IN A PROBLEM OF WAVEGUIDES COUPLING THROUGH NARROW SLOTS

2006
*
Electromagnetic Waves
*

Based on the asymptotic method of averaging, an approximate analytical solution of the integral equation concerning a magnetic current in slot-hole coupling apertures of electrodynamic volumes, which differ profitably from the known ones in literature, has been obtained. The formulas for the currents and characteristics scattering of transverse and longitudinal slots in common broad and narrow walls of rectangular waveguides are given. The comparison to results obtained by other methods and experimental data has been done.

doi:10.2528/pier05060902
fatcat:fh2so2ewlbghzpmlqtl433sftm
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SURFACE IMPEDANCE OF THIN GRAPHITE FILMS AT MICROWAVE FREQUENCIES

2018
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Progress In Electromagnetics Research M
*

Surface impedance of thin graphite films with metallic properties is evaluated by a waveguide technique based on measuring reflection and transmission coefficients of thin film membranes at operating frequencies in rectangular waveguides. One-and two-layer membranes of finite thickness, completely filling the waveguide cross-section, are investigated. Formulas allowing analytical estimates of surface impedances for nonmagnetic films made of amorphous carbon are derived. Simulation results for

doi:10.2528/pierm18053003
fatcat:bq55yizorfealcxddbt6tw4zjy
## more »

... aphite films at frequencies from 5 to 10 GHz are analyzed.##
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COMBINED VIBRATOR-SLOT STRUCTURES IN ELECTRODYNAMIC VOLUMES

2012
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Progress in Electromagnetics Research B
*

distributions F W g z1 (kr,kL

doi:10.2528/pierb11101008
fatcat:j25li5juvfandirue47b5fkmcm
*v*) = − 2iZ S k 2 L*v*r k L*v*2 2 (2 + cos 2kL*v*) − 7 4 sin 2k L*v*− 2(coskL*v*− 1) , (25) F W g z2 (kr,kL*v*) = − 2iZ S k 2 L*v*r k L*v*2 2 (2 + cos 2kL*v*) + 7 ... e −kzr sin 2 k x x 01 [sinkL*v*cos k y L*v*− (k/k y ) coskL*v*sin k y L*v*] 2 , F W g z (kr,kL*v*) = − i r L*v*−Lv f 2*v*(s 1 )Z S (s 1 )ds 1 . ...##
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ASYMMETRIC IMPEDANCE VIBRATOR FOR MULTI-BAND COMMUNICATION SYSTEMS

2021
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Progress In Electromagnetics Research M
*

(7) can be written as E 0s (s) =

doi:10.2528/pierm21031207
fatcat:tmrgihdkbrcblald6rhi3vwanu
*V*0 δ(s + s δ ) = E s 0s (s) + E a 0s (s), E s 0s (s) =*V*0 2 [δ(s + s δ ) + δ(s − s δ )] , E a 0s (s) =*V*0 2 [δ(s + s δ ) − δ(s − s δ )] , (8) J(s) = J s (s) + J ... SW R) in the antenna feeder with the wave impedance W is equal to:*V*SW R = 1 + |S 11 | 1 − |S 11 | , (13) where S 11 = Z in −W Z in +W is the reflection coefficient in the feeder. ...##
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FORMATION OF RADIATION FIELDS OF LINEAR VIBRATOR ARRAYS BY USING IMPEDANCE SYNTHESIS

2017
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Progress In Electromagnetics Research M
*

If the vibrator is excited in the middle by a δ-generator with the voltage amplitude

doi:10.2528/pierm17031602
fatcat:n7frprq5uzh57homs4xyl76y4i
*V*0 , i.e., (13) can be reduced to E 0s (s ′ ) =*V*0 δ(s − s ′ ), Formula J(s) ≈ αJ 1 (s) = − iωε 1 α*V*0 2k m cosk ...##
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ALTERNATIVE REPRESENTATION OF GREEN'S FUNCTION FOR ELECTRIC FIELD ON SURFACES OF THIN VIBRATORS

2016
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Progress In Electromagnetics Research M
*

r ) + k 2 1 ĜA ( r, r ) = −4π Îδ(| r − r |), (2) E ( r) = k 2 1 iωε 1

doi:10.2528/pierm16102604
fatcat:273q5yb2wzc6rfrpnplfgw5mty
*V*ĜE r, r J e r d r , (3) E ( r) = 1 iωε 1 graddiv + k 2 1*V*ĜA r, r J e r d r , (4) The difference between formulas (3) and ( 4 ... If the source is given by an electric current density J e ( r ) in the volume*V*, the electric field can be represented by following expressions: ) − k 2 1 ĜE ( r, r ) = 4π Îδ(| r − r |), (1) Δ ĜA ( r, ...##
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ELECTROMAGNETIC WAVES RADIATION BY A VIBRATORS SYSTEM WITH VARIABLE SURFACE IMPEDANCE

2016
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Progress In Electromagnetics Research M
*

The active vibrator (n = 1) is excited at its center (s 1 = 0) by δ-generator of harmonic oscillations with voltage amplitude

doi:10.2528/pierm16091605
fatcat:7kosk7jw4rhepifuy5c2mgl5cu
*V*0 . ... Thus, the projection of the electric field of extraneous sources on the longitudinal axis of the active vibrator has only symmetric component E 0s 1 (s 1 ) = E s 0s 1 (s 1 ) =*V*0 δ(s 1 ) and the fields ...
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