Novel Compact Microstrip Dual-Mode Filters with Two Controllable Transmission Zeros

Authors

  • Zhaojun Zhu Institute of Applied Physics University of Electronic Science and Technology of China, Chengdu, 610054, China
  • Lu Cao Institute of Applied Physics University of Electronic Science and Technology of China, Chengdu, 610054, China
  • Chaolei Wei Institute of Applied Physics University of Electronic Science and Technology of China, Chengdu, 610054, China

Keywords:

Bandpass filter, dual-mode, source-load coupling, transmission zero

Abstract

Novel compact pentagonal dual-mode filters by short-loaded are presented. The field patterns of this type of resonators are investigated using full-wave electromagnetic simulations. The technique of utilizing capacitive and inductive source-load coupling to improve the performance of filters is fully researched. Advantages of using this type of filter are not only its compact size, but also its transmission zeros that can be independently controlled. Then, two dual-mode bandpass filters are designed, fabricated and tested to validate the design. Good agreement is achieved between the measured results and simulated ones.

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References

I. Wolff, “Microstrip bandpass filter using degenerate modes of a microstrip ring resonator,” Electron. Lett., vol. 8, pp. 302-303, June 1972.

B. F. Ganji and M. Samadbeik, “Simple configuration low-pass filter with very wide stop band,” ACES Express Journal, vol. 1, no. 1, pp. 4-7, 2016.

X. Deng, Z. Wang, K. D. Xu, and B. Yan, “Novel microstrip ultra-wideband bandpass filter using radial-stub-loaded structure,” ACES Express Journal, vol. 1, no. 1, pp. 20-23, 2016.

J. R. Lee and J. H. Cho, “New compact bandpass filter using microstrip λ/4 resonator with open stub inverter,” IEEE Microw. Guided Wave Lett., vol. 10, no. 12, pp. 526-527, Dec. 2000.

T. Yan, X. H. Tang, and J. Wang, “A novel quadband bandpass filter using short stub loaded Eshaped resonators,” IEEE Microwave & Wireless Components Letters, vol. 25, no. 8, pp. 508-510, Aug. 2015.

W.-H. Wu, “Compact double-mode cross-coupled microstrip bandpass filter with tunable transmission zeros,” IET Microw. Antennas Propag., vol. 2, no. 4, pp. 373-377, Dec. 2008.

L. Gao and X. Y. Zhang, “High-selectivity dualband bandpass filter using a quad-mode resonator with source-load coupling,” IEEE Microwave & Wireless Components Letters, vol. 23, no. 9, pp. 474-476, Sept. 2013.

J.-S. Hong and H. Shaman, “Dual-mode microstrip open-loop resonators and filters,” IEEE Trans. Microw. Theory Tech., vol. 55, no. 8, pp. 1764-1770, Aug. 2007.

W. Feng, X. Gao, and W. Che, “Bandpass filters with multiple transmission zeros using open/ shorted stubs,” IET Microw., Antennas Propag.,vol. 9, no. 8, pp. 769-774, June 2015.

B. Yu, B. Jia, and Z. Zhu, “Compact tri-band bandpass filter with stub-loaded stepped-impedance resonator,” Electron. Lett., vol. 51, no. 9, pp. 701-703, Apr. 2015.

Z. Zhu, S. Liang, and C. Wei,“Novel pentagonal dual-mode filters with adjustable transmission zeros,” ACES Express Journal, vol. 31, no. 10, pp. 1238-1243, 2016.

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Published

2021-07-27

How to Cite

[1]
Zhaojun Zhu, Lu Cao, and Chaolei Wei, “Novel Compact Microstrip Dual-Mode Filters with Two Controllable Transmission Zeros”, ACES Journal, vol. 33, no. 01, pp. 43–48, Jul. 2021.

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Section

General Submission