A Low‐Profile Broadband Gain Enhancement Fabry‐Pérot Antenna With an Array Source and Vertical Metal Walls

ABSTRACT A low‐profile broadband gain enhancement Fabry‐Pérot (FP) antenna utilizing an array source and vertical metal walls is presented. The FP antenna consists of a source antenna and a partially reflective surface (PRS). The source antenna employs a 2 × 2 microstrip patch array to enhance the gain. The PRS comprises 10 × 10 PRS units, while the metal walls are strategically positioned within the cavity to optimize the radiation properties for the antenna. The prototyped FP antenna boasts a measured 10‐dB impedance bandwidth of 9.59–10.57 GHz (9.7%), achieving a peak gain of 15.56 dBi at 10.09 GHz. The broadband, high‐gain, and low‐profile properties of the proposed antenna make it suitable for various high‐integration communication systems. Both simulated and measured results confirm the validity of the proposed design.