Capacitive fed RMSA with slotted ground plane

In this paper, embedding slots in the ground plane of Capacitive fed RMSA has been proposed. Initially, the reference antenna consists of rectangular patch of size of (35.5 × 45.6) mm
²
and a small rectangular feed patch of size of (1.4 × 4) mm
²
residing on the same substrate suspended above the ground plane. Coaxial probe is used to feed the small patchwhich in turn excites the radiator patch electromagnetically, yielding a large impedance bandwidth (BW) of 39%, with goodgain and broadside radiation pattern. By, cutting three rectangular slots in the ground plane of reference antenna, the prototypeantenna is fabricated and measurement has been carried out to validate the result for compact broadband response.