Planar Fabry–Perot directive antenna: a simplified analysis by equivalent circuit approach

G. Di Massa, S. Costanzo and H.O. Moreno

Journal of Electromagnetic Waves and Applications, 2015, vol. 29, issue 2, 261-274

Abstract: A new approach is proposed for the analysis and design of a planar Fabry–Perot antenna. The complete modal analysis of the field into the cavity leads to a simplified equivalent circuit, able to provide a reliable description of the coupling with the feeding waveguide, as well as to compute the equivalent currents on the radiating apertures, thus obtaining the radiated far-field. The proposed approach is preliminary validated on a metallic Fabry–Perot antenna structure. Then, a modified configuration, based on a cavity partially-filled with a dielectric substrate, is assumed to obtain a Fabry–Perot antenna with improved bandwidth features. Experimental validations on array prototypes are successfully discussed.

Date: 2015
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DOI: 10.1080/09205071.2014.997838

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