Broadband designs of shorted slot cut 60 sectoral microstrip antennas

Broadband variations of slot cut shorted 60° Sectoral microstrip antenna using multi-resonator technique, are proposed. The slot tunes the spacing between TM1/41 and TM1/4,0 modes of the shorted patch, to yield broader bandwidth. The gap-coupled variation of slot cut shorted 60° Sectoral patch with shorted 60° Sectoral patch yields bandwidth of more than 900 MHz (∼75%) whereas gap-coupled variation of two slot cut and shorted 60° Sectoral patches yields bandwidth of more than 950 MHz (∼78%). Due to the shorted patch, proposed configurations yields radiation pattern with higher cross polar levels with peak gain of more than 3.0 dBi.