The compact microstrip antenna is realized by placing shorting post or plate along the zero field line at the fundamental mode of the patch. In this paper, compact variation of circular microstrip antenna, a shorted 900 sectoral microstrip antenna is discussed. It gives a bandwidth of more than 300 MHz at center frequency of around 1000 MHz. Further a new 900 sectoral microstrip antenna, realized by shorting the curved surface is proposed. It gives simulated and measured bandwidth of more than 1000 MHz in the same frequency band as that given by the above shorted 900 sectoral patch. The proposed antenna gives broadside radiation pattern with higher cross polar levels with a gain of more than 6 dBi over most of the bandwidth

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Circular Microstrip Antenna Compact Microstrip Antenna Shorted 900 Sectoral Microstrip Antenna Broadband Microstrip Antenna Proximity Feeding