Broadband Quadrature Hybrid Design Using Metamaterial Transmission Line and Its Application in the Broadband Continuous Phase Shifter
作者： Cheng-Jung Lee , Kevin MKH Leong , Tatsuo Itoh , None
DOI: 10.1109/MWSYM.2007.380066
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摘要: This paper presents a broadband quadrature hybrid which makes use of the power division properties conventional Wilkinson splitters along with phase difference achieved using metamaterial based delay lines. The bandwidth 90degplusmn5deg and 0.48 dB between outputs splitter line combination is 67%. full four-port coupler formed employing an additional combiner. A phase/power 90degplusmn10deg 1.2 dB, respectively, are observed over same 67% bandwidth. To demonstrate applicability proposed hybrid, continuous shifter on vector sum method tested.
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