Results 81 to 90 of about 3,021 (195)

A broadband stable addition theorem for the two dimensional MLFMA [PDF]

open access: yes, 2009
Integral equations arising from the time-harmonic Maxwell equations contain the Green function of the Helmholtz equation as the integration kernel. The structure of this Green function has allowed the development of so-called fast multipole methods (FMMs)
Bogaert, Ignace, Olyslager, Femke
core   +1 more source

Far field reconstruction of antennas via single‐surface phaseless spherical near‐field scans: A novel approach based on dipole equivalence

open access: yesElectronics Letters, Volume 60, Issue 20, October 2024.
A novel approach is proposed in this letter to reconstruct the far‐field radiation pattern from the phaseless electric field of an antenna scanned on a single near‐field sphere. It adopts the dipole equivalence approach and introduces a term representing the error from the linearly correlated portion in the least‐square problem, namely the linear ...
Junzhe Tan, Lingnan Song, Zhiqiang Xiang
wiley   +1 more source

Simulation and Measurements of Electric and Magnetic Fields of an RFID Loop Antenna Anti-Theft Gate System

open access: yesJournal of Communications Software and Systems, 2010
The radiation of RFID anti-theft gate system based on two parallel coaxial square loop antennas has been analyzed.The system was simulated in FEKO and near electric andmagnetic fields have been calculated.
Damir Senić   +2 more
doaj  

Antenna System for Small-Sized Test Generator Radio [PDF]

open access: yes, 2018
Рассмотрен порядок работы, проведенной в ходе решения вопроса выбора антенной системы для малогабаритного тестового генератора радиопомех. Описаны основные требования, предъявляемые к антенной системе.
Толмачев, А. В.   +1 more
core  

Phase-only Synthesis Algorithm for Transmitarrays and Dielectric Lenses [PDF]

open access: yes, 2018
In this work a phase-only synthesis algorithm is applied for the design of lens-array antennas yielding a desired radiation pattern. The potential relevance of spillover effect on the lens radiation pattern is illustrated, making it necessary to include ...
Fernández Robledo, Omar   +3 more
core  

Differents Aspects of the Interferences Caused By Wind Farms Over Tv Signals [PDF]

open access: yes, 2010
One of the environmental effects of wind farms is that wind turbines act as scattering devices of the electromagnetic RF waves and thus, may cause interferences to different telecommunication services around them.
Blanco Gonzalez, Pedro   +3 more
core  

An effective methodology to design scale model of non-metallic structural entity

open access: yesMATEC Web of Conferences, 2018
In order to solve the problem on designing scale model of non-metallic structural entity, a method is first proposed according to the high-frequency approximation algorithm, in which reflection coefficients of designed scale model are optimized to be as ...
Yuan Liming   +4 more
doaj   +1 more source

MODELING OF MICROSTRIP ANTENNA ARRAYS USING THE INTEGRAL EQUATION METHOD

open access: yesДоклады Белорусского государственного университета информатики и радиоэлектроники, 2019
The application of the method of integral equations for finding the characteristics and parameters of microstrip antenna arrays is described. When modeling an array of microstrip dipoles each radiator is replaced a wire.
А. V. Ulanouski, V. V. Kizimenko
doaj  

Investigating Equations Used to Design a Very Small Normal-Mode Helical Antenna in Free Space

open access: yesInternational Journal of Antennas and Propagation, 2018
A normal-mode helical antenna (NMHA) has been applied in some small devices such as tire pressure monitoring systems (TPMS) and radio frequency identification (RFID) tags.
Dang Tien Dung   +3 more
doaj   +1 more source

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