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Progress In Electromagnetics Research Letters
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WIDEBAND BALUN BANDPASS FILTER BASED ON SUBSTRATE INTEGRATED WAVEGUIDE AND CSRRS

By W. Feng, S. Yao, J. Shen, and R. Cao

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Abstract:
A high selectivity wideband balun bandpass filter based on substrate integrated waveguide (SIW) and complementary split rings resonators (CSRRs) is proposed. 180° reverse phase characteristic between the two output ports can be easily realized by the multi-layer SIW power divider. Eight complementary split rings resonators are used to achieve the sharp rejection upper stopband. The proposed wideband balun filter exhibits a fractional bandwidth of 37% centered at 9.45 GHz and amplitude and phase imbalance less than 0.5 dB and 1°.

Citation:
W. Feng, S. Yao, J. Shen, and R. Cao, "Wideband Balun Bandpass Filter Based on Substrate Integrated Waveguide and CSRRs ," Progress In Electromagnetics Research Letters, Vol. 53, 115-119, 2015.
doi:10.2528/PIERL15040701

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