Compact shorted 1350 Sectoral microstrip antenna derived from 2700 Sectoral microstrip antenna is proposed. On thicker air substrate (h > 0. 1?0) it yields bandwidth of more than 350 MHz (35%). To increase the bandwidth, its rectangular slot cut variation is proposed. The slot reduces the resonance frequency of higher order TM1/4,1 mode of the shorted patch and along with fundamental TM1/4,0 mode, yields bandwidth of more than 500 MHz (>50%). The realized bandwidth in shorted slot cut Sectoral microstrip antenna is nearly the same as that given by 2700 Sectoral patch, but with 50% reduction in patch area. Due to shorted patch, proposed antenna gives gain of around 3 dBi over the entire bandwidth.

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Sectoral Microstrip Antenna Compact Microstrip Antenna Broadband Microstrip Antenna Rectangular Slot Higher Order Mode