This paper presents a novel printed antenna element capable of providing high-quality radioelectric performance in two frequency bands with a separation ratio in the range of approximately 1:1–1:3. The properties of printed grids are generalized to improve the polarization purity and the band isolation of this dual-band, dual-polarization patch element. A GSM/2DCS patch antenna with slot coupling excitation is described, and the possibilities offered by this technique are discussed.
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P. Brachat (2000) studied this question.
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