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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2018-04-18
Design of Compact Bandpass Filters Using Sixteenth Mode and Thirty-Second Mode SIW Cavities
By
Ya-Na Yang,

    Dr. Ya-Na Yang

    Shanghai University

    China

    Homepage

Guo Hui Li,

    Dr. Guo Hui Li

    Key Laboratory of Specialty Fiber Optics and Optical Access Network

    Shanghai University

    China

    Homepage

Li Sun,

    Dr. Li Sun

    Shanghai University

    China

    Homepage

Wei Yang,

    Dr. Wei Yang

    Key Laboratory of Specialty Fiber Optics and Optical Access Network

    Shanghai University

    China

    Homepage

Xuexia Yang

    Prof. Xuexia Yang

    Shanghai University

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 75, 61-66, 2018
doi:10.2528/PIERL18021002 | Google Scholar

Abstract
This paper presents two novel bandpass filters using sixteenth mode substrate integrated waveguide (SMSIW) and thirty-second mode SIW (TMSIW) cavities, respectively. The overall size of SMSIW and TMSIW cavities can be reduced by a factor of 15/16 and 31/32 in comparison to the filters designed in the conventional SIW resonator, while keeping almost the same resonant frequency. Based on SMSIW cavity, a first-order filter with the center frequency of 2.45GHz and a transmission zero (TZ) located at the upper-stopband is proposed. The second-order TMSIW cavity filter exhibits one TZ at the lower-stopband and two TZs at the upper-stopband, and it has a better performance of the passband than the former with the same size and center frequency. It also has a wider upper-stopband with suppression of an unwanted harmonic at 7.6GHz. Two intersecting rectangular slots are etched between the two cavities with a smaller angle between them of 30 degrees. The whole size of the filter is 24.2 mm×29.1 mm×0.508 mm. The filters are fabricated in SIW technology, and the frequency response shows good agreement between simulated and measured results.
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Citation
Ya-Na Yang, Guo Hui Li, Li Sun, Wei Yang, and Xuexia Yang, "Design of Compact Bandpass Filters Using Sixteenth Mode and Thirty-Second Mode SIW Cavities," Progress In Electromagnetics Research Letters, Vol. 75, 61-66, 2018.
doi:10.2528/PIERL18021002
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