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The paper is focused on a design of a three-element filtering patch antenna array using an equivalent-circuit approach. The array is requested to exhibit a prescribed frequency response of a realized gain which corresponds to the output signal of a band-pass filter. When implementing the antenna, no filter elements are allowed to be used. Such an antenna can become a good candidate for the design of filtering antennas (filtennas). We present an equivalent circuit of such an antenna array. The equivalent circuit is validated by a full-wave model of the antenna. The equivalent circuit is transformed to a low-pass prototype filter. The low-pass prototype filter is intended to be exploited for the synthesis of filtering antenna arrays.
CitationKufa, M.; Raida, Z.; Mateu, J. Equivalent circuits of planar filtering antennas fed by apertures. A: International Conference on Microwaves, Radar and Wireless Communications. "MIKON-2014 Proceedings of the 20th International conference on Microwaves, Radar, and Wireless Communication". Gdansk: 2014, p. 1-4.
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