Broadband proximity fed shorted sectoral microstrip antennas

Broadband proximity fed variations of shorted Sectoral Microstrip antennas, derived from equivalent isosceles triangular microstrip antennas are proposed. With decrease in Sectoral angle from 120° to 50°, the fundamental mode resonance frequency of shorted Sectoral patch decreases and it yields bandwidth of 1710 MHz (~70%) in 120° Sectoral MSA to 436 MHz (~45%) in 50° Sectoral MSA. The proposed Sectoral antennas show broadside radiation pattern with a gain of more than 5 dBi over most of the bandwidth.