Design of Active Integrated GNSS Antenna Based on the Impedance Transforming Quadrature Four-Feed Network
In the paper, a wideband miniaturized impedance-transforming quadrature four-feed network with a flat output phase difference is presented and applied to the niner rkt 9 rdo 2023 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 a