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Based on composite right/left handed (CRLH) transmission lines (TLs) we propose a backward coupled-line coupler characterized by reduced size and enhanced bandwidth with respect to many other CRLH coupled-line couplers which have been introduced. This symmetric microstrip coupler with quadrature phase difference has also higher coupling-level and wider bandwidth than conventional coupled-line couplers...
Based on composite right/left handed (CRLH) transmission lines (TLs) we propose a backward coupled-line coupler characterized by reduced size and enhanced bandwidth with respect to many other CRLH coupled-line couplers which have been introduced. This symmetric microstrip coupler with quadrature phase difference has also higher coupling-level and wider bandwidth than conventional coupled-line couplers...
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