Multi-slotted microstrip patch antenna for wireless communication

Abstract

A new design technique of microstrip patch antenna is presented in this paper. The proposed antenna design consists of inverted patch structure with air-filled dielectric, direct coaxial probe feed technique and the novel slotted shaped patch. The composite effect of integrating these techniques and by introducing the new multi-slotted patch, offer a low profile, high gain, broadband, and compact antenna element. A wide impedance bandwidth of 27.62% at -10dB return loss is achieved. The maximum achievable gain is 9.41dBi. The achievable experimental 3-dB beamwidth (HPBW) in the azimuth and elevation are 60.88° and 39° respectively at centre frequency.