Transmitarray antenna design for X-band applications

Abstract

The paper presents a transmitarray antenna working at X-band frequency for satellite information applications. The transmitarray element isdesigned based on the multi-layer structure with C-patches coupled through ring slots. Only two substrates are required to obtain a wide phase range without severe loss. In this paper, seven unit cells are designed.Simulated results show that the cells can provide a 0,8 GHz common -3dB bandwidth, cover 270° phase range with step of 45°. A transmitarray antenna is designed and measured at 12 GHz to verify the performance of the unit cells. The simulated and measured results show that the antenna has a sufficient phase range, low loss as well as good radiation pattern.