Vol. 169

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2020-12-31

Wideband RCS Reduction of High Gain Fabry-Perot Antenna Employing a Receiver-Transmitter Metasurface

By Peng Xie, Guang-Ming Wang, Hai-Peng Li, Ya-Wei Wang, and Binfeng Zong
Progress In Electromagnetics Research, Vol. 169, 103-115, 2020
doi:10.2528/PIER20062703

Abstract

This paper presents a high gain Fabry-Perot antenna with radar cross section (RCS) reduction property. A receiver-transmitter metasurface is designed and used as the partially reflective surface (PRS) of the antenna to realize high gain and wideband RCS reduction. Firstly, the working principle of the unit cell is similar to the reception and radiation of two patch antennas. The unit cell is designed to present high reflectivity through tuning the impedance matching between two patches. This can ensure that the antenna obtains high gain. Then, the ground plane in the middle makes the reflection phase from different sides of the unit cell be tuned independently. Two unit cells with same reflection phase from the bottom side and 180° reflection phase difference from the top side are obtained through tuning the size of the transmitter patch. With the improved chessboard arrangement of these two unit cells, the incident wave can be scattered into many directions. So the metasurface presents a good RCS reduction property. More importantly, thanks to the high reflectivity of the metasurface, almost all the electromagnetic waves from the outside are reflected and rarely enter the cavity. Therefore, the antenna achieves good in band RCS reduction. The measured results of the fabricated antenna agree well with the simulated ones, which verify the correctness of the design. The antennas reaches the maximum gain of 18.2 dBi at 10 GHz. Wideband RCS reduction and good in band RCS reduction are also obtained by the antenna.

Citation


Peng Xie, Guang-Ming Wang, Hai-Peng Li, Ya-Wei Wang, and Binfeng Zong, "Wideband RCS Reduction of High Gain Fabry-Perot Antenna Employing a Receiver-Transmitter Metasurface," Progress In Electromagnetics Research, Vol. 169, 103-115, 2020.
doi:10.2528/PIER20062703
http://jpier.org/PIER/pier.php?paper=20062703

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