Square Dual-Mode Quasi-Elliptic Bandpass Filter with Wide Upper Stopband

Authors

  • Y. Ma Department of Communication Engineering, Nanjing University of Science and Technology, Nanjing 210094, China , Faculty of Mathematics and Physics, Huaiyin Institute of Technology, Huai’an 223003, China
  • W. Che Department of Communication Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
  • W. Feng Department of Communication Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
  • J.-X. Chen School of Electronics and Information, Nantong University, Nantong 226019, China

Keywords:

Bandpass filter, dual-mode, quasi-elliptic, wide upper stopband

Abstract

A square dual-mode quasi-elliptic bandpass filter (BPF) with a wide stopband is proposed. To realize the quasi-elliptic response and harmonic suppression for the filter, the inductive source-load coupling is introduced. To achieve wider stopband suppression, the open-circuited stubs are adopted. A demonstration filter with 3-dB fractional bandwidth (2.84 GHz - 3.28 GHz) about 14.3 % has been designed, fabricated, and measured. Simulated and measured results indicate that the proposed filter can effectively suppress 6th harmonic response referred to a suppression degree of 16.5 dB.

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References

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Published

2021-09-27

How to Cite

[1]
Y. . Ma, W. . Che, W. . Feng, and J.-X. . Chen, “Square Dual-Mode Quasi-Elliptic Bandpass Filter with Wide Upper Stopband”, ACES Journal, vol. 28, no. 11, pp. 1056–1060, Sep. 2021.

Issue

2013: Vol 28 Iss 11

Section

General Submission