Metasurface Interlaced SR CP Patch with the Capability to Change Polarization Diversity

Abstract

In this work, an affordable solution for the improved performance of circular polarization diversity array antenna by helping metasurface structure (MTS) is presented. The basic structure includes a multi-input feed network which is ended to a 2×5 sequentially rotated subarray. A layer of MTS has been used to modify basic antenna characteristics of inspiring ref. [5]. This innovation is aimed to increase the bandwidth of basic antenna from 14.7% (5.05-5.85 GHz) to 37.8% (4.5-6.6 GHz), and 3-dB AR about 4%. Employing MTS layer leads to an increase in the gain of the antenna to 15 dBic. More details of the antenna are reported in the text.