High gain planar antenna using optimised partially reflective surfaces

TLDR

The antenna’s performance is linked to the PRS array’s reflection characteristics, optimized analytically and validated with full‑wave modeling that includes edge effects. The study demonstrates a high‑gain planar antenna employing an optimized PRS in front of a waveguide aperture, and identifies the array size that maximizes antenna efficiency.

Abstract

A high gain planar antenna has been investigated, using an optimised partially reflecting surface (PRS) placed in front of a waveguide aperture in a ground plane. The antenna performance is initially related to the reflection characteristics of the PRS array following an approximate analysis. The array geometry is optimised using an analytical formula. The optimisation results are verified using a full wave model taking into account the edge effects. The array size for maximum antenna efficiency has also been investigated.