Design of a W-band Dual-polarization Monopulse Reflector Antenna

Abstract

This paper introduces a W-band dual-polarization reflector antenna which combines one dual-polarized transmit-receive SUM channel and two single-polarized DIFF receiving channels. The feed of the antenna consists of four OMTs (Orth Mode Transducer) to realize dual-polarization monopulse angle measurement. The SUM beam gain of the proposed antenna is over 41 dBi, cross-polarization level is better than -43 dB. The first sidelobe level is better than -30dB. The null-depth is better than -20dB.