Metamaterial-Based Ku-Band Flat-Panel High-Gain Antenna for Satcom Applications

This paper presents a circularly polarised (CP) high-gain (+23 dBi) Fabry-Perot resonant cavity (F-PRC) type antenna design at Ku-band (12–18 GHz) for satellite communications (satcom). The antenna operates at 12.4 GHz with 200 MHz bandwidth. The F-PRC comprises a partially reflective surface (PRS) and a metallic ground plane. The F-PRC is excited by a CP microstrip patch antenna placed at the ground centre. The simulated realised gain is over +20 dBi and total efficiency is better than 90% over the band of interest.