WIDEBAND MAGIC-T COUPLER USING AN ASYMMETRIC COPLANAR STRIPLINE OR COPLANAR WAVEGUIDE RING STRUCTURE

摘要

A uniplanar wide-band magic-T circuit using an asymmetric coplanar-stripline (ACPS) or a coupler waveguide (CPW) ring circuit is proposed. Both types of structure exhibit a uniplanar configuration which reduces the circuit complexity and manufacturing cost A phase-reverse section is built in the E-arm branch of the circuits to obtain the function of a magic-T operation. The ACPS- and CPW-ring magic-T couplers have measured bandwidths of 4,4 and 4.6 GHz, respectively, with acceptable amplitude and phase imbalances.