Abstract

In this paper, a novel multiple slot microstrip patch antenna with enhanced bandwidth is presented. The design adopts contemporary techniques namely; probe feeding, inverted patch structure and multiple slotted patch. The composite effect of integrating these techniques and by introducing the novel multiple shaped patch, offer a low profile, wide bandwidth, high gain and compact antenna element. The proposed patch has a compact dimension of 0.707 λ <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</inf> × 0.354 λ <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</inf> (where λ <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</inf> is the guided wavelength of the center operation frequency). With the proposed concept, an antenna prototype is simulated and analyzed. The proposed antenna achieves a fractional bandwidth of 27.15% (1.91 to 2.51 GHz) at 10 dB return loss while maintaining a maximum gain of 10.5 dBi. The design is suitable for array applications especially for base station.

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