Compact Broadband Slotted Rectangular Microstrip Antenna

Abstract

The broadband and compact rectangular microstrip antenna (MSA) is realized either by cutting a half-U-slot or rectangular slot inside the patch. In this letter, broadband rectangular microstrip antenna, by cutting a half-U-slot and rectangular slot on the edges of the patch, is proposed. Due to the two resonant slots, the antenna gives more bandwidth as compared to only a rectangular-slot-cut or a half-U-slot-cut rectangular microstrip antenna. The proposed antenna has broadside radiation pattern over the entire bandwidth.