Array-based Fabry-Perot cavity antenna for flat-topped radiation pattern
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS(2022)
Abstract
In this letter, an array-based ray tracing model and Fabry-Perot cavity antenna covered by frequency selective surfaces (FSS) are proposed to realize the flat-topped radiation pattern (FTRP). Based on the array-based model, a good FTRP can be obtained by combining the initial directivity of the feed array with the additional directivity of FSS-type partially reflective surface. By using the proposed method, a low-cost, lightweight, simple structure and dual-polarization Fabry-Perot cavity antenna with small aperture size for FTRP is designed. From the measured results, the FTRP with more than 58 degrees beamwidth and less than 2 dB ripple level in the frequency band of 2.4 to 2.7 GHz for indoor communication are obtained.
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Key words
array-based ray tracing model,dual-polarization antenna,Fabry-Perot cavity antenna,flat-topped radiation pattern,FSS-type PRS
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