2023
DOI: 10.1155/2023/3828460
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Design of Active Integrated GNSS Antenna Based on the Impedance Transforming Quadrature Four-Feed Network

Yao Wang,
Hongmei Liu,
Shuo Li
et al.

Abstract: In the paper, a wideband miniaturized impedance-transforming quadrature four-feed network with a flat output phase difference is presented and applied to the design of an active integrated GNSS antenna where no extra impedance matching circuit is needed. The features of impedance transformation and flat output phase difference are achieved by the proposed miniaturized rat-race coupler. When combining the proposed rat-race coupler with two trans-directional (TRD) couplers, a four-feed network with stable sequen… Show more

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