A new design technique of microstrip patch antenna is presented in this paper. The proposed antenna design consists of inverted patch structure with air-fllled dielectric, direct coaxial probe feed technique and the novel slotted shaped patch. The composite efiect of integrating these techniques and by introducing the new multi- slotted patch, ofier a low proflle, high gain, broadband, and compact antenna element. A wide impedance bandwidth of 27.62% at i10dB 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.
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Islam et al. (2009) studied this question.
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