V-band cross-coupled SIW band-pass filter with an antisymmetric U-slot negative coupling structure

Zengxu Guo, Kuo-Sheng Chin, Wenquan Che and Chih-Chun Chang

Journal of Electromagnetic Waves and Applications, 2013, vol. 27, issue 8, 953-961

Abstract: This study presents an low-temperature cofired ceramic (LTCC) V-band cross-coupled band-pass filter using substrate-integrated waveguide cavities. Two antisymmetric U-shaped slots connected by via is proposed to construct the negative coupling structure, which is simple and especially useful for 60 GHz applications. Moreover, the U-slot structure possesses a wide range of realizable coupling coefficients from −0.008 to −0.075. An experimental LTCC fourth-order filter was fabricated for demonstration, achieving a bandwidth of 12% (7.2 GHz) at 59.6 GHz with superior frequency selectivity.

Date: 2013
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DOI: 10.1080/09205071.2013.793620

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