Bandpass Filter and Diplexer Based on Dual-Mode Dielectric Filled Waveguide Resonators

This paper presents the designs of a bandpass filter (BPF) and a diplexer based on the TM<sub>210</sub> mode and the TM<sub>120</sub> mode of the dielectric filled waveguide resonators (DFWRs). The DFWR is designed by integrating a dielectric main body and a printed circuit b...

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Main Authors: Wei Qin, Jiang Liu, Hai-Ling Zhang, Wen-Wen Yang, Jian-Xin Chen
Format: Article
Language:English
Published: IEEE 2022-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/9733352/
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author Wei Qin
Jiang Liu
Hai-Ling Zhang
Wen-Wen Yang
Jian-Xin Chen
author_facet Wei Qin
Jiang Liu
Hai-Ling Zhang
Wen-Wen Yang
Jian-Xin Chen
author_sort Wei Qin
collection DOAJ
description This paper presents the designs of a bandpass filter (BPF) and a diplexer based on the TM<sub>210</sub> mode and the TM<sub>120</sub> mode of the dielectric filled waveguide resonators (DFWRs). The DFWR is designed by integrating a dielectric main body and a printed circuit board (PCB) cover. The PCB cover is electrically connected with the top surface of the dielectric body. For each mode, metallized blind holes can be set at its maximum electric-field points to excite or extract it and the other mode will not be influenced. Microstrip lines on the PCB are utilized to connect different pairs of the metallized blind holes to form the internal and external coupling structures. For verification, a BPF and a diplexer are designed, fabricated and measured based on the DFWRs. In measurement, the BPF is with a frequency band of 2.515 GHz - 2.675 GHz, an insertion loss of 0.6 dB, and a return loss of 20 dB. The two frequency bands of the proposed diplexer are 3.3 GHz - 3.4 GHz and 3.7 GHz - 3.8 GHz. For the two frequency bands, the measured insertion losses are 0.9 dB/0.85 dB and the isolations are better than 40 dB/50 dB.
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spelling doaj.art-4d26e697918344c184dc3d66b3fad79b2022-12-22T03:14:30ZengIEEEIEEE Access2169-35362022-01-0110293332934010.1109/ACCESS.2022.31589849733352Bandpass Filter and Diplexer Based on Dual-Mode Dielectric Filled Waveguide ResonatorsWei Qin0https://orcid.org/0000-0002-5433-6912Jiang Liu1Hai-Ling Zhang2Wen-Wen Yang3https://orcid.org/0000-0002-0492-5508Jian-Xin Chen4https://orcid.org/0000-0002-8703-5294School of Information Science and Technology, Nantong University, Nantong, ChinaSchool of Information Science and Technology, Nantong University, Nantong, ChinaSchool of Information Science and Technology, Nantong University, Nantong, ChinaSchool of Information Science and Technology, Nantong University, Nantong, ChinaSchool of Information Science and Technology, Nantong University, Nantong, ChinaThis paper presents the designs of a bandpass filter (BPF) and a diplexer based on the TM<sub>210</sub> mode and the TM<sub>120</sub> mode of the dielectric filled waveguide resonators (DFWRs). The DFWR is designed by integrating a dielectric main body and a printed circuit board (PCB) cover. The PCB cover is electrically connected with the top surface of the dielectric body. For each mode, metallized blind holes can be set at its maximum electric-field points to excite or extract it and the other mode will not be influenced. Microstrip lines on the PCB are utilized to connect different pairs of the metallized blind holes to form the internal and external coupling structures. For verification, a BPF and a diplexer are designed, fabricated and measured based on the DFWRs. In measurement, the BPF is with a frequency band of 2.515 GHz - 2.675 GHz, an insertion loss of 0.6 dB, and a return loss of 20 dB. The two frequency bands of the proposed diplexer are 3.3 GHz - 3.4 GHz and 3.7 GHz - 3.8 GHz. For the two frequency bands, the measured insertion losses are 0.9 dB/0.85 dB and the isolations are better than 40 dB/50 dB.https://ieeexplore.ieee.org/document/9733352/Dielectric filled waveguide resonator (DFWR)printed circuit board (PCB)dual-modebandpass filterdiplexer
spellingShingle Wei Qin
Jiang Liu
Hai-Ling Zhang
Wen-Wen Yang
Jian-Xin Chen
Bandpass Filter and Diplexer Based on Dual-Mode Dielectric Filled Waveguide Resonators
IEEE Access
Dielectric filled waveguide resonator (DFWR)
printed circuit board (PCB)
dual-mode
bandpass filter
diplexer
title Bandpass Filter and Diplexer Based on Dual-Mode Dielectric Filled Waveguide Resonators
title_full Bandpass Filter and Diplexer Based on Dual-Mode Dielectric Filled Waveguide Resonators
title_fullStr Bandpass Filter and Diplexer Based on Dual-Mode Dielectric Filled Waveguide Resonators
title_full_unstemmed Bandpass Filter and Diplexer Based on Dual-Mode Dielectric Filled Waveguide Resonators
title_short Bandpass Filter and Diplexer Based on Dual-Mode Dielectric Filled Waveguide Resonators
title_sort bandpass filter and diplexer based on dual mode dielectric filled waveguide resonators
topic Dielectric filled waveguide resonator (DFWR)
printed circuit board (PCB)
dual-mode
bandpass filter
diplexer
url https://ieeexplore.ieee.org/document/9733352/
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AT jiangliu bandpassfilteranddiplexerbasedondualmodedielectricfilledwaveguideresonators
AT hailingzhang bandpassfilteranddiplexerbasedondualmodedielectricfilledwaveguideresonators
AT wenwenyang bandpassfilteranddiplexerbasedondualmodedielectricfilledwaveguideresonators
AT jianxinchen bandpassfilteranddiplexerbasedondualmodedielectricfilledwaveguideresonators