A Miniaturized Wide-stopband Wide-passband Cavity Filter with Two Asymmetric Stepped Probes

作者

  • Panfeng Bao Changsha Aeronautical Vocational and Technical College Changsha 410000, China, Nanjing University of Science and Technology Nanjing 210000, China
  • Yulun Wu Northeastern University at Qinhuangdao Qinhuangdao 066004, China
  • Yufeng Shen Changsha Aeronautical Vocational and Technical College Changsha 410000, China
  • Jinrong Liu Changsha Aeronautical Vocational and Technical College Changsha 410000, China
  • Yaqi Li Northeastern University at Qinhuangdao Qinhuangdao 066004, China

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https://doi.org/10.13052/2025.ACES.J.400509

关键词:

Cavity filter, miniaturization, wide-band, wide-stopband

摘要

In this paper, a miniaturized cavity filter with wide-stopband and wide-passband is proposed. Because of the bended stub-loaded resonator (BSLR), the proposed cavity filter successfully excites three TEM modes, namely TEM-I, TEM-II and TEM-III. The low-frequency transmission zero (LFTZ) is generated by the lateral probe, and the high-frequency transmission zero (HFTZ) is generated by the lateral stub. The lateral metal cylinder can concentrate the electric field of the stray mode, leading to a high suppression level. The asymmetric vertical arrangement of the probes can suppress the fundamental TE101 mode and several high-order modes. Therefore, a stopband with a bandwidth of 2.02 times the center frequency is formed. The proposed cavity filter has a bandwidth of 42% and an electrical size of 0.26λg×0.25λg×0.22λg. It has several advantages applied to the 5G communication system.

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Panfeng Bao is currently pursuing the Ph.D. degree in Armament Science and Technology at the State Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing, China. Since 2017, he has been with Changsha Aeronautical Vocational and Technical College, Changsha, China, where he is currently a lecturer with the School of Aeronautical Mechanical Manufacturing. His research interests focus on dynamic response analysis of weapon systems, mechanical fault diagnosis under extreme conditions, RF device design and RF communication in weapon systems.

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Yulun Wu is currently pursuing the B.E. degree in Northeastern University at Qinhuangdao, Qinhuangdao, China. Since 2022, he has been working on RF devices and has published in several conferences and journals. His current interests include terahertz communication and microwave devices and systems.

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Yufeng Shen is an Associate Professor at Changsha Aeronautical Vocational and Technical College, Changsha, China. His main research focus is aircraft digital manufacturing technology.

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Jinrong Liu is an Experimental Engineer at Changsha Aeronautical Vocational and Technical College, Changsha, China. He is a recipient of the Hunan Province May 1st Labor Medal and National Technical Expert, with main research focus on mechatronics technology.

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Yaqi Li is currently pursuing the B.E. degree at Northeastern University in Qinhuangdao, Qinhuangdao, China. Since 2022, she has conducted in-depth research on the design and application of microwave passive integrated devices such as coaxial cavity filters and power dividers.

参考

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已出版

2025-05-30

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[1]
P. . Bao, Y. . Wu, Y. . Shen, J. . Liu, 和 Y. . Li, 《A Miniaturized Wide-stopband Wide-passband Cavity Filter with Two Asymmetric Stepped Probes》, ACES Journal, 卷 40, 期 05, 页 451–456, 5月 2025.

期

2025: Vol 40 Iss 5

栏目

General Submission

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