A Compact Millimeter-Wave Patch Quadrature Coupler With a Wide Range of Coupling Coefficients


In this letter, a compact quadrature coupler based on a circular sector patch element with metallic posts loading along the edge, is proposed to provide a wide range of coupling coefficients, which is difficult to achieve using existing topologies. Instead, this can be achieved by simply adjusting the ratio of the radii of circular sector patch resulting in… (More)


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