Results 31 to 40 of about 19,229 (302)

Fast and Accurate Simulation Technique for Large Irregular Arrays [PDF]

open access: yes, 2017
A fast full-wave simulation technique is presented for the analysis of large irregular planar arrays of identical 3-D metallic antennas. The solution method relies on the Macro Basis Functions (MBF) approach and an interpolatory technique to compute the ...
Abraham, Jens   +7 more
core   +3 more sources

Mutual coupling error modeling and correction of shared aperture interleaved sparse array antennas

open access: yesDianxin kexue, 2018
The shared aperture interleaved sparse array antenna is an effective way to implement a multi-function array antenna.The existing parameterized mutual coupling elimination methods are all developed for uniform array antennas.The mutual coupling matrix ...
Junming ZHUANG, Longjun LI
doaj   +2 more sources

Effects of Reentry Plasma Sheath on Mutual-Coupling Property of Array Antenna

open access: yesInternational Journal of Antennas and Propagation, 2015
A plasma sheath enveloping a reentry vehicle would cause the failure of on-board antennas, which is an important effect that contributes to the “blackout” problem.
B. W. Bai, X. P. Li, Y. M. Liu, J. Xu
doaj   +1 more source

Scattering characteristics of antennas in cyberspace

open access: yes工程科学学报, 2020
5G network technology can meet the high requirements of cyberspace development in the performance of communication platforms. Massive MIMO (multiple-input multiple-output) antenna array is one of the core technologies of 5G. The mutual coupling effect of
Jian-zhong CHAI   +4 more
doaj   +1 more source

On the Impact of Hardware Impairments on Massive MIMO [PDF]

open access: yes, 2014
Massive multi-user (MU) multiple-input multiple-output (MIMO) systems are one possible key technology for next generation wireless communication systems. Claims have been made that massive MU-MIMO will increase both the radiated energy efficiency as well
Athley, Fredrik   +8 more
core   +2 more sources

A Low-Profile Decoupling Slot-Strip Array for 2 × 2 Microstrip Antenna

open access: yesIEEE Access, 2020
Two-dimensional antennas provide additional variables that can be used to control and shape the pattern, and widely used in engineering applications include tracking radar, communications, direction finding and many others.
Di Gao   +5 more
doaj   +1 more source

Pengembangan Antena Mikrostrip Susun Dua Elemen Dengan Penerapan Defected Ground Structure Berbentuk Trapesium [PDF]

open access: yes, 2008
Two Element Microstrip Antenna Array with Defected Ground Structure. This paper presents a two elementmicrostrip antenna array using trapezium shape defected ground structure (DGS).
Asvial, M. (Muhamad)   +3 more
core  

Port Decoupling for Small Arrays by Means of an Eigenmode Feed Network [PDF]

open access: yes, 2008
An alternative approach to port decoupling and matching of arrays with tightly coupled elements is proposed. The method is based on the inherent decoupling effect obtained by feeding the orthogonal eigenmodes of the array.
Coetzee, Jacob, Yu, Y
core   +2 more sources

Mutual Coupling Mechanisms Within Arrays of Nonlinear Antennas [PDF]

open access: yesIEEE Transactions on Electromagnetic Compatibility, 2005
In this paper, mathematical analyses and physical interpretations for the mutual coupling mechanisms within a finite nonlinearly loaded antenna array are presented. These analyses are based on the method of nonlinear currents with the array mutual coupling effects treated by a power series expansion technique.
Lee, Kun-Chou, Chu, Tah-Hsiung
openaire   +1 more source

Adaptable Tile‐Based Pneumatic Origami through Structurally Coupled Localized Actuation

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents tile‐based pneumatic origami structures with rigid tiles and flexible fabric creases, achieving adaptable properties including morphing shape, selective multistability, and tunable stiffness. Independently pressurized folding bladders at each crease enable structurally coupled localized actuation of origami structures.
Tiantian Li, Jonathan Luntz, Diann Brei
wiley   +1 more source

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