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초록

A very simple circularly polarised (CP) printed patch antenna with enhanced bandwidth has been designed, fabricated and tested. The antenna consists of two semi-circular patches and a rectangular ground plane, and is excited by a simple microstrip feedline. The total substrate size is 50 x 50 x 1.52 mm(3). The measured -10 dB impedance bandwidth is 101% (2.84-8.7 GHz) and the measured 3 dB axial-ratio (AR) bandwidth is 49.8% (3.95-6.57 GHz). Good agreement is achieved between measured and simulated results.

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