A new wideband magneto-electric dipole antenna composed of a horizontal bowtie electric dipole and a vertically oriented folded shorted patch antenna is designed. The antenna is excited by a stair-shaped probe feed without the need of an additional balun. A prototype was fabricated and measured. Results show that an impedance bandwidth of 95.2%, withSWR≤ 2from 1.65 GHz to 4.65 GHz, was achieved. Stable radiation pattern with low cross polarization, low back radiation, nearly identical E- and H-plane patterns and an antenna gain of 7.9±0.9 dBi was found over the operating frequencies.
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Ge et al. (2012) studied this question.
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