A Compact Bandpass Filter with Active Switchable Passband Status

作者

  • Ruofeng Xu School of Information and Control Engineering China University of Mining and Technology, Xuzhou, 221116, China https://orcid.org/0000-0003-2627-3624
  • Wei Tang School of Information and Control Engineering China University of Mining and Technology, Xuzhou, 221116, China
  • Jun Wang School of Information and Control Engineering China University of Mining and Technology, Xuzhou, 221116, China
  • Lei Zhao School of Information and Control Engineering China University of Mining and Technology, Xuzhou, 221116, China

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https://doi.org/10.13052/2023.ACES.J.380916

关键词:

Active, bandpass filter, half mode substrate integrated waveguide, switchable

摘要

In order to meet the increasing demand for adjustable devices in the modern wireless communication system, a compact bandpass filter with active switchable passband is proposed. The filter is based on the half mode substrate integrated waveguide (HMSIW), and uses its cut-off characteristics to form the lower stopband. The resonant characteristics of a quarter-wavelength shorted stub generates a transmission zero (TZ) at higher frequency, which forms the upper stopband. The active control of DC power supply determines the biased states of PIN diodes to change the electrical size of the filtering parts. When the diodes are reverse biased, the filter works in C band with the passband of 3.9-5.2 GHz; when the diodes are forward biased, the passband shifts to S band of 2.7-3.6 GHz. The 28.6% relative bandwidth in both frequency bands remains constant. The simple design realizes the active switching between bands, providing a promising idea for active adjustable devices.

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Ruofeng XU received the B.Sc. (2004) degree from Suzhou University in electronics and science and technology and the M.Sc. (2006) and Ph.D. (2010) degrees in electronic engineering from the University of Kent, UK. He had been the visiting scholar (2018) for one year in Rutgers University, USA. Now he has been a lecturer in School of Information and Control Engineering, China University of Mining and Technology. His main research directions are microwave technology and application.

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Wei Tang has been a master student at the School of Information and Control Engineering, China University of Mining and Technology. His main researches are on SIW filters and active adjustable filters.

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Jun Wang has been a lecturer in School of Information and Control Engineering, China University of Mining and Technology. His main researches are on radio frequency/microwave devices, antennas and transmission, and SPP components.

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Lei Zhao has been a professor and doctoral supervisor in School of Information and Control Engineering, China University of Mining and Technology. He has been a senior member of IEEE, member of the Antenna Branch of the China Electronics Society, and chairman of IEEE AP-S Chapter Xuzhou. His main researches are on RF microwave devices, new electromagnetic materials, vortex wave communication, and computational electromagnetics.

参考

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已出版

2023-09-30

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[1]
R. . Xu, W. . Tang, J. . Wang, 和 L. . Zhao, 《A Compact Bandpass Filter with Active Switchable Passband Status》, ACES Journal, 卷 38, 期 09, 页 746–750, 9月 2023.

期

2023: Vol 38 Iss 9

栏目

Special Issue on ACES-China 2022 Conference