ABSTRACT This paper presents a wideband, high gain Fabry‐Perot cavity antenna operating at 3.5 GHz. The antenna utilizes a cross‐slot as the main radiating element, along with an artificial magnetic conductor (AMC) layer and a partially reflecting surface (PRS) layer. The integration of a AMC layer beneath the cross‐slot antenna facilitates high gain and unidirectional radiation characteristics. Additionally, a PRS layer is positioned in front of the antenna to further enhance both bandwidth and gain. The proposed antenna design achieves a 10 dB impedance bandwidth ranging from 3.02 to 3.89 GHz (25.43%) with a peak gain of 9.56 dBi. Overall size of the antenna is , where represents free space wavelength at an operating frequency of 3.5 GHz. The simulated and measured results are found to be in good agreement.
Suryapaga et al. (Wed,) studied this question.