2023-01-23
A Novel Decoupling Technique for Single-Layered Closely-Spaced Patch Antenna Arrays
By
Sai Radavaram,
Dr. Sai Radavaram
Troy University
USA
Homepage
Progress In Electromagnetics Research M, Vol. 115, 35-44, 2023
Abstract
A new technique to reduce the mutual coupling between closely-spaced, single-layered patch antenna elements is presented. The proposed design comprises an integrated novel decoupling structure to generate an out-of-phase decoupling signal to effectively lower the coupling between the elements. In addition, coplanar L-probes and interdigital filter shaped slits on the ground plane are incorporated to further improve the isolation. The realized isolation level is about 28 dB at the frequency of operation. This is a significant achievement for a single-layered low-profile structure, wherein the center-to-center element spacing is only around 0.25λ0, and more importantly, no shorting vias are used.
