Broadband Gap-coupled Shorted 60° Sectoral Microstrip Antenna

The compact variation of equilateral triangular microstrip antenna, a shorted 60 Sectoral microstrip antenna is discussed. The proximity fed shorted 60 Sectoral microstrip antenna is proposed which gives simulated and measured BW of more than 700 MHz (>60%). To increase the bandwidth and gain, gap-coupled configuration two Shorted 60 Sectoral patches is proposed. It yields simulated and measured bandwidth of more than 800 MHz (>70%). Due to shorted patch, single and gap-coupled shorted Sectoral configurations shows higher cross polar radiation pattern with gain of more than 3 dBi and more than 4 dBi, respectively over the bandwidth. Although the antenna shows higher cross polar levels, but the proposed designs in 800 to 1400 MHz frequency range can find applications in mobile communication environment wherein higher cross polar content will lead to lower signal loss. Keyword Equilateral triangular microstrip antenna, Compact microstrip antenna, Shorted 60 Sectoral microstrip antenna, Gapcoupled, Proximity feed