volume | PIER Journals

2019-01-11

Design of Novel Miniaturized Multilayer Substrate Integrated Waveguide Filter and Tunable Filter

Mei Qian,

Dr. Mei Qian

Guangdong Lingnan Institute of Technology

China

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Wen-Xuan Xie,

Dr. Wen-Xuan Xie

Department of Information Engineering

Engineering University of Chinese People Armed Police

China

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Kaiwei Zuo

Dr. Kaiwei Zuo

Engineering University of Chinese People Armed Police

China

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Progress In Electromagnetics Research M, Vol. 77, 195-204, 2019

doi:10.2528/PIERM18112502

Abstract

A novel miniaturized multilayer substrate integrated waveguide (SIW) filter is designed. The filter is constructed with four compact SIW resonator cavities, and each cavity supports TE₁₀₁ mode, which can be controlled by the slot located between layers. The area of the compact SIW resonator is just 1/16 of that of original substrate integrate waveguide (SIW) resonator. Meanwhile, the area of the four-order filter is 13.2 mm×26.4 mm. The insertion loss and return loss of the fabricated filter are -1.8 dB and -14.6 dB, respectively. Meanwhile, the tunable filter realizes center frequency linearity, which works at 1.6 GHz with an adjustable range of 51.8%. The insertion loss is -1.2 dB, and the return loss is less than -15 dB. The coplanar cavity coupling structure achieves a switchable bandwidth.

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Mei Qian, Wen-Xuan Xie, and Kaiwei Zuo, "Design of Novel Miniaturized Multilayer Substrate Integrated Waveguide Filter and Tunable Filter," Progress In Electromagnetics Research M, Vol. 77, 195-204, 2019.
doi:10.2528/PIERM18112502

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