A novel single-layer Ka-band reflectarray antenna

Abstract

This paper describes a novel single-layer Ka-band reflectarray antenna using log-periodic element. The proposed element composed of two log-periodic structures. By using the linear and smooth reflection phase curve, a reflectarray antenna with 324 elements is designed and simulated. The gain of the proposed antenna is 26.4 dB and the 1-dB gain bandwidth is 10.53%, which is a good candidate for the broadband situation.