Corrugated Tapered Slot Antenna with Band-stop Characteristic

This paper proposes a tapered slot antenna with band-stop characteristic at Ka-band. In order to create a 28 GHz stopband and reduce sidelobes, SRRs are added on the feedline and corrugations are formed on both sides of the antenna. Through these structures, total efficiency decreases from 92.0% to 2.3% at 28 GHz and the front-to-back ratio improves from 12.0 dB to 27.8 dB at 35 GHz.