Phase Compensation for Decoupling of Large-Scale Staggered Dual-Polarized Dipole Array Antennas
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AbstractStaggered array antenna is a common array configuration for large-scale array antennas due to its favorable radiation characteristics and relatively large element spacing. In developing a compact staggered dipole array, the most challenging issue is how to simultaneously reduce the four mutual couplings taking place between adjacent co-polarized antenna elements with diversified phase laggings. A large difference in the phase of different mutual couplings makes simultaneous reduction of all the mutual couplings by applying the recently developed array-antenna decoupling surface (ADS) technique difficult. In this article, a phase compensation method by using a staple-shaped probe for alleviating the largest phase offset is proposed conceptually and verified experimentally. With the proposed phase compensation method, the ADS technique can be effectively applied to a compact staggered dipole array with a wideband simultaneous decoupling. The design guideline for the phase compensation probe is presented by EM simulation and a parametric study. Two practical design examples of dual polarized staggered dipole arrays are given to demonstrate the effectiveness of the proposed phase compensation method in conjunction with ADS, showing a promising potential for wideband simultaneous decoupling of a large-scale dual polarized staggered dipole array-antenna.
Acceptance Date08/11/2019
All Author(s) ListChangning Wei, Zhen-Yuan Zhang, Ke-Li Wu
Journal nameIEEE Transactions on Antennas and Propagation
Volume Number68
Issue Number4
Place of PublicationUSA
Pages2822 - 2831
LanguagesEnglish-United States
KeywordsMutual coupling,Dipole antennas,Phased arrays,Probes,Receiving antennas,Array signal processing

Last updated on 2020-19-10 at 01:30