Development of a dual band circularly-polarized offset feed microstrip reflectarray

Abstract

The design procedure and experimental results are presented for a high-gain, dual-band, circularly-polarized (CP) reflectarray antenna with an offset feed, operating at the Ku/Ka-band (Tx=30 GHz, Rx=20 GHz). The performance of this offset reflectarray antenna is compared with other CP reflectarray antennas designed by the authors of this paper. A transmit band gain of 38 dBic and a receive band gain of 36 dBic both with an axial ratio of less than 3 dB were measured for this antenna.