Low‐profile Fabry–Pérot cavity antenna with a double‐layered partially reflecting surface structure

Abstract

A low‐profile Fabry–Pérot cavity antenna covered with a double‐layered partially reflecting surface is proposed to enhance the gain and reduce the height of the antenna.A ray theory is applied to predict the resonance frequency and cavity height of the proposed antenna. The proposed antenna is useful for designing a cavity antenna with a low profile and high gain. The maximum gain of the antenna is 13.88 dB, and its total height is smaller than λ/8 at an operating frequency of 2.46 GHz. The good agreement between the measured and predicted results ensures the validity of our design approaches. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:271–273, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25698

Compact and Robust Fabry-Perot Cavity Antenna with PEC Wall

“…Since the FPC antenna has to satisfy the resonance condition, it has the minimum height of a half wavelength and is not inherently planar. Various types of low-profile FPC antennas have been introduced to overcome this weakness [2][3][4][5][6][7][8][9][10]. However, specific structures such as metasurfaces are needed to modify the resonance condition of the cavity; hence, the design procedure is complicated and difficult in these cases.…”