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Progress In Electromagnetics Research Letters
ISSN: 1937-6480
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HARMONIC SUPPRESSION OF BRANCH-LINE AND RAT-RACE COUPLER USING COMPLEMENTARY SPILT RING RESONATORS (CSRR) CELL

By J. Zhang and X.-W. Sun

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Abstract:
In this paper, complementary spilt ring resonator (CSRR) is applied to design harmonic suppression microstrip rat-race and branch-line coupler. As the CSRR cell is etched on the ground plane of the substrate, the frequency selective properties have a considerable relation with its geometry parameters, which has been analyzed detailedly. As demonstration, a rat-race and a branch-line coupler are designed and fabricated using conventional printed-circuit board fabrication process. The proposed couplers show the performance as good as that of the corresponding conventional structures, but deep harmonic suppression in addition. The design and simulation have been performed using full-wave EM TOOLS ADS Momentum.

Citation:
J. Zhang and X.-W. Sun, "Harmonic Suppression of Branch-Line and Rat-Race Coupler Using Complementary Spilt Ring Resonators (CSRR) Cell," Progress In Electromagnetics Research Letters, Vol. 2, 73-79, 2008.
doi:10.2528/PIERL07122702

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