volume | PIER Journals

2020-01-21

High-Order Triple-Mode Half-Mode Filter and Dual-Band Diplexer

Xiu-Guang Chen,

Dr. Xiu-Guang Chen

Shanghai University

China

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Guo Hui Li,

Dr. Guo Hui Li

Key Laboratory of Specialty Fiber Optics and Optical Access Network

Shanghai University

China

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Zhiwei Shi,

Dr. Zhiwei Shi

School of Communication & Information Engineering

Shanghai University

China

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Shuo Dan Feng

Dr. Shuo Dan Feng

Shanghai University

China

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Progress In Electromagnetics Research Letters, Vol. 89, 77-84, 2020

doi:10.2528/PIERL19102901

Abstract

In this paper, a novel high-order triple-mode half-mode bandpass filter using a single perturbed substrate integrated waveguide (SIW) cavity and a dual-band diplexer are presented. Circular shape metal via-holes are added in the middle of a square SIW cavity as perturbation. The perturbed TE101, TE102 and TE201 resonant modes of the SIW cubic cavity are used to design the proposed filters, which can be shifted to the desired frequency by adjusting the position and size of via-holes. The proposed method reduces the size of the filter, and the measured results indicate that the bandwidth is higher than previous literatures. The dual-band diplexer with a half-mode SIW (HMSIW) structure can be easily implemented based on the proposed BPF through a T-junction, which decreases the number of resonating elements. A triple-mode half-mode filter using a single perturbed SIW cavity with center frequency of 7.43 GHz is obtained. The designed filter and dual-band diplexer are fabricated and measured to validate the present approach.

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Xiu-Guang Chen, Guo Hui Li, Zhiwei Shi, and Shuo Dan Feng, "High-Order Triple-Mode Half-Mode Filter and Dual-Band Diplexer," Progress In Electromagnetics Research Letters, Vol. 89, 77-84, 2020.
doi:10.2528/PIERL19102901

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