Compact Differential Parallel Coupled Line Band-pass Filter with Open Stub

Authors

  • Dong-Sheng La 1 School of Computer Science and Engineering Northeastern University, Shenyang, 110819, P. R. China , 2 State Key Laboratory of Millimeter Waves Southeast University, Nanjing, 210096, P. R. China.
  • Shou-Qing Jia 1 School of Computer Science and Engineering Northeastern University, Shenyang, 110819, P. R. China
  • Long Cheng School of Computer Science and Engineering Northeastern University, Shenyang, 110819, P. R. China
  • Xue-Lian Ma School of Computer Science and Engineering Northeastern University, Shenyang, 110819, P. R. China

Keywords:

Differential band-pass filter, even- and odd-mode analysis, microwave components, open stub, parallel coupled line

Abstract

A novel differential narrow-band band-pass filter design method is presented based on the parallel coupled line and the open stub. Based on the transmission line model, the proposed differential bandpass filter is analyzed by using even- and odd-mode analytical method. The central resonant frequency of the proposed differential filter is given. The relations between the filtering performance and the impedance parameters are discussed. A compact differential band-pass filter is designed based on the resonant conditions. The common mode signal is well suppressed. The differential bandpass filter is simulated, fabricated and measured. The measured results and the simulated results are basically consistent.

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References

Y. Li, H. C. Yang, Y. W. Wang, and S. Q. Xiao, “Ultra-wideband band-pass filter based on parallelcoupled microstrip lines and defected ground structure,” ACES Journal, vol. 28, no. 1, pp. 21-26, Jan. 2013.

W. J. Feng, M. L. Hong, and W. Q. Che, “Narrowband band-pass filters with improved upper stopband using open/shorted coupled lines,” ACES Journal, vol. 31, no. 2, pp. 152-158, Feb. 2016.

H. Wang, Y. Q. Yang, W. Kang, W. Wu, K. W. Tam, and S. K. Ho, “Compact ultra-wideband differential band-pass filter using self-coupled ring resonator,” Electronics Letters, vol. 49, no. 18, pp. 1156-1157, Aug. 2013.

X. H. Wang, S. Hu, and Q. Y. Cao, “Differential broadband filter based on microstrip coupled line structures,” Electronics Letters, vol. 50, no. 15, pp. 1069-1070, July 2014.

H. Wang, K. W. Tam, W. W. Choi, W. Y. Zhuang, S. K. Ho, W. Kang, and W. Wu, “Analysis of coupled cross-shaped resonator and its application to differential band-pass filters design,” IEEE Transactions on Microwave Theory and Techniques, vol. 62, no. 12, pp. 2942-2953, Dec. 2014.

L. Li, J. Bao, J. J. Du, and Y. M. Wang, “Compact differential wideband band-pass filters with wide common-mode suppression,” IEEE Microwave and Wireless Components Letters, vol. 24, no. 3, pp. 164-166, Mar. 2014.

J. G. Zhou, Y. C. Chiang, and W. Q. Che, “Compact wideband balanced band-pass filter with high common-mode suppression based on cascade parallel coupled lines,” IET Microwaves, Antennas and Propagation, vol. 8, no. 8, pp. 564-570, Aug. 2014.

Q. X. Chu and L. L. Qiu, “Wideband balanced filters with high selectivity and common-mode suppression,” IEEE Transactions on Microwave Theory and Techniques, vol. 63, no. 10, pp. 3462- 3468, Oct. 2015.

J. S. Hong and M. J. Lancaster, Microstrip Filters for RF/Microwave Applications. New York: Wiley, 2001.

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Published

2021-08-05

How to Cite

[1]
Dong-Sheng La, Shou-Qing Jia, Long Cheng, and Xue-Lian Ma, “Compact Differential Parallel Coupled Line Band-pass Filter with Open Stub”, ACES Journal, vol. 32, no. 03, pp. 237–242, Aug. 2021.

Issue

2017: Vol 32 Iss 3

Section

General Submission