A wideband, high gain, low cross-polarization circular patch antenna with linear polarization and monopole-like radiation pattern is proposed for wireless communication systems. The impedance bandwidth (|S 11 | <; -10 dB) of 36.5% (4.25-6.15 GHz) is achieved at the central frequency of 5.20 GHz. The simulated and measured peak gains are 9.7 and 9.1 dBi, respectively. A good agreement is achieved between the simulated and measured results.
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Liu et al. (2016) studied this question.
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