Abstract
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. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 47: 327–330, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21160
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