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A triple-wideband bandpass filter with controllable bandwidths based on stub-loaded resonators

Published online by Cambridge University Press:  18 June 2018

Li Gong ,
Yang Xiong ,
Fan Zhang ,
LiTian Wang ,
Yan Sun ,
XinJie Zhao ,
Ming He ,
Lu Ji ,
Xu Zhang  and
Bo Zhang
Li Gong
Affiliation:
College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China
Yang Xiong
Affiliation:
College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China
Fan Zhang
Affiliation:
College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China
LiTian Wang
Affiliation:
College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China
Yan Sun
Affiliation:
College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China
XinJie Zhao
Affiliation:
College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China
Ming He
Affiliation:
College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China
Lu Ji
Affiliation:
College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China
Xu Zhang*
Affiliation:
College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China
Bo Zhang
Affiliation:
College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China
*
Author for correspondence: Xu Zhang, E-mail: nkzhangxu@nankai.edu.cn
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Abstract

In this paper, a triple-wideband bandpass filter (BPF) with controllable bandwidths based on two multi-mode stub-loaded resonators (MMSLRs) and a triple-mode resonator is presented. The MMSLR is loaded with two identical folded open-ended stubs and a T-shaped stub. Each passband of the tri-band BPF is formed by four resonant modes, which provide sufficient bandwidths to meet various application requirement. By adjusting the lengths of open-ended stubs, three passband bandwidths can be controlled individually. The center frequencies of the triple-wideband BPF are allocated at 2.7, 3.67, and 5.44 GHz, with the 3 dB fractional bandwidths (FBWs) of 20.1, 14.7, and 26.3%. Among the three passbands, the highest one covers the 5 G WiFi band (5.15–5.85 GHz). The measured results of the proposed filter exhibit excellent agreement with simulated results.

Keywords

Bandpass filter (BPF)controllable bandwidthsmulti-mode stub-loaded resonators (MMSLRs)triple-wideband
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 10 , Issue 8 , October 2018 , pp. 904 - 910
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2018 

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References

1.Li, Z-P, Wang, S-J, Su, T and Liang, C-H (2012) A novel triple passband filter design method based on stepped impedance resonators. Progress in Electromagnetics Research C 33, 199–211.Google Scholar
2.Lan, S-W, Weng, M-H, Chang, S-J, Hung, C-Y and Liu, S-K (2015) A tri-band bandpass filter with wide stopband using asymmetric stub-loaded resonators. IEEE Microwave and Wireless Components Letters 25, 19–21.Google Scholar
3.Chen, B-J, Shen, T-N and Wu, R-B (2009) Design of tri-band filters with improved band allocation. IEEE Transactions on Microwave Theory and Techniques 57, 1790–1797.Google Scholar
4.Chen, F-C and Chu, Q-X (2009) Design of compact tri-band bandpass filters using assembled resonators. IEEE Transactions on Microwave Theory and Techniques 57, 165–171.Google Scholar
5.Liu, H-W, Wang, Y, Wang, X-M, Lei, J-H, Xu, W-Y, Zhao, Y-L, Ren, B-P and Guan, X-H (2013) Compact and high selectivity tri-band bandpass filter using multimode stepped-impedance resonator. IEEE Microwave and Wireless Components Letters 23, 536–538.Google Scholar
6.Liu, H-W, Liu, F, Ren, B-P, Yao, A-P, Xiao, X, Yang, Y-X and Guan, X-H (2017) Compact tri-band bandpass filter using asymmetric stub-loaded stepped-impedance resonator with multiple transmission zeros. International Journal of Microwave and Wireless Technologies 9, 1–5.Google Scholar
7.Chen, W-Y, Weng, M-H and Chang, S-J (2012) A new tri-band bandpass filter based on stub-loaded step-impedance resonator. IEEE Microwave and Wireless Components Letters 22, 179–181.Google Scholar
8.Li, Q and Zhang, Y-H (2016) Tri-band filter with multiple transmission zeros and controllable bandwidths. International Journal of Microwave and Wireless Technologies 8, 9–13.Google Scholar
9.Zhang, Y and Zhao, X-L (2017) Compact tri-band bandpass filter with two closely frequency spaced passbands. Journal of Electromagnetic Waves and Applications 31, 82–90.Google Scholar
10.Gao, L and Zhang, X-Y (2015) Compact tri-band bandpass filter novel eight-mode resonator for 5G WiFi application. IEEE Microwave and Wireless Components Letters 25, 660–662.Google Scholar
11.Chu, Q-X, Chen, F-C, Tu, Z-H and Wang, H (2009) A novel crossed resonator and its applications to bandpass filters. IEEE Transactions on Microwave Theory and Techniques 57, 1753–1759.Google Scholar
12.Deng, H-W, Zhao, Y-J, Zhou, X-J, Fu, Y and Liu, Y-Y (2013) Design of compact and high selectivity tri-band wideband microstrip BPF. Microwave and Optical Technology Letters 55, 258–261.Google Scholar
13.Xue, S-J, Gao, L and Zhang, X-Y (2013) Miniaturized triband bandpass filter using short-stub-loaded resonator with high selectivity. Microwave and Optical Technology Letters 55, 2081–2083.Google Scholar
14.Xiong, Y, Teng, C, He, M, Tam, K-W, Yu, X, Choi, W-W and Chen, H-H (2016) Using intrinsic zero to notch satellite signals in UWB filter. International Journal of Microwave and Wireless Technologies 9, 1009–1015.Google Scholar