A new stacked patch antenna with a folded patch feed is presented for ultra-wideband (UWB) application. The bandwidth is obtained by a stacked patch fed with a folded patch feed, and the size reduction is realised through the use of shorting wall. The antenna occupies a compact dimension of 0.340λg×0.340λg×0.227λg (where λg is the guided wavelength of the centre operating frequency). The design achieves an impedance bandwidth of 90% across the frequency range of 3.75–9.86 GHz. The details of the antenna designs are shown, and the results with low-profile characteristics make this antenna suitable for UWB applications.
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Shakib et al. (2010) studied this question.
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