A new inhomogeneous partially reflecting surface for Fabry‐Perot antenna to reduce side lobe level

Abstract

In this article, an extension of the spatial filter method to study Fabry‐Perot antennas with homogeneous or inhomogeneous partially reflecting surface (PRS) of finite size is proposed. This tool was subsequently validated through the study of different Fabry‐Perot antennas, with homogeneous PRS and inhomogeneous GRadient‐INdex (GRIN) PRS that present very high side lobe level (SLL). Since they are due to structure truncation, a new inhomogeneous PRS to reduce the SLL is designed with the new analytical tool. The new inhomogeneous PRS for Fabry‐Perot antenna is characterized by simulations and measurements. Compared to the homogeneous PRS antenna, the proposed PRS allows a SLL reduction of 5 dB without decreasing the 14 dBi directivity.

A dual‐polarized wideband gain enhancement Fabry–Perot antenna by adopting a wedge‐shaped phase correcting structure

“…Fabry-Perot (FP) antennas, also known as FP resonator antennas, electromagnetic band gap (EBG) resonator antennas, 2-D leaky-wave antennas, resonant cavity antennas and PRS antennas, have attracted extensive attention due to their advantages of planar structure, high gain, strong directivity, simple feeding network, and easy fabrication. [1][2][3][4][5][6][7][8] Also, the dualpolarized FP antennas have broad application prospects in the field of wireless communications, and they have the ability to improve the spectral efficiency, increase channel capacity, reduce the installation space, and overcome the polarization mismatch between the transmitter and the receiver.…”

A Novel Wideband Partially Reflective Surface for Antenna Gain Enhancement

“…Nowadays, due to the rapid expansion of wireless communication systems domain, the request of highgain and wideband directive antennas has acquired great focus [1,2]. To not refer to a complex feed network, the helpful and the simplest technique to improve the radiation performance of printed antennas is to implement a Fabry-Perot cavity; by placing electromagnetic-band-gap structures as a partially reflective surface (PRS) at a proper distance along their direction of propagation.…”