Home Technology Balanced BPFs with wideband CM suppression and high selectivity based on double-sided parallel-strip line
Article
Licensed
Unlicensed Requires Authentication

Balanced BPFs with wideband CM suppression and high selectivity based on double-sided parallel-strip line

  • Hong-Yu Liu EMAIL logo , Xing-Chen Zhou , Rui Li and Feng Wei
Published/Copyright: March 4, 2025
Become an author with De Gruyter Brill
Submit Manuscript Author Information
Frequenz
From the journal Frequenz Volume 79 Issue 9-10

Abstract

In this paper, two novel balanced bandpass filters (BPFs) with wideband common-mode (CM) suppression and high selectivity are proposed based on the out-of-phase double-sided parallel strip-line (DSPSL) structure. The out-of-phase DSPSL structure is composed of a pair of out-of-phase transmission lines as the balanced ports and a λ/2 resonator placed in the center. Based on the DSPSL structure with out-of-phase characteristics, a wideband CM suppression without affecting the differential-mode (DM) performance is achieved in two BPFs. By using a pair of shorted-coupled lines in BPF I and introducing a ring resonator in BPF Ⅱ, two transmission zeros are attained, achieving high selectivity in both BPF designs. For experimental demonstration purposes, two balanced BPFs are designed and fabricated. The measured results are in good agreement with the simulated ones.

Keywords: balanced bandpass filter (BPF); common-mode (CM) suppression; double-sided parallel strip line (DSPSL); high selectivity
Corresponding author: Hong-Yu Liu, National Key Laboratory of Radar Detection and Sensing, Xidian University, Xi’an, 710071, China, E-mail:

  1. Research ethics: Not applicable.

  2. Informed consent: Not applicable.

  3. Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.

  4. Use of Large Language Models, AI and Machine Learning Tools: None declared.

  5. Conflict of interest: The author states no conflict of interest.

  6. Research funding: None declared.

  7. Data availability: Not applicable.

References

[1] J. Shi, J. Ren, J. Dong, W. Feng, and Y. Yang, “Supercompact balanced wideband bandpass filter using capacitor-loaded three-line coupled structure,” IEEE Microw. Wireless Compon. Lett, vol. 32, no. 6, pp. 499–502, 2022, https://doi.org/10.1109/lmwc.2022.3141123.Search in Google Scholar

[2] Y.-H. Zhu, J. Cai, and J.-X. Chen, “Quasi-reflectionless double-sided parallel-strip line bandpass filter with enhanced selectivity,” IEEE Trans. Circuits Syst. II, Exp. Briefs, vol. 69, no. 2, pp. 339–343, 2022, https://doi.org/10.1109/tcsii.2021.3099508.Search in Google Scholar

[3] K. D. Xu, Z. Luo, Y. Liu, and Q. H. Liu, “High-selectivity single-ended and balanced bandpass filters using ring resonators and coupled lines loaded with multiple stubs,” AEU Int. J. Electron. Commun., vol. 96, pp. 193–198, 2018, https://doi.org/10.1016/j.aeue.2018.09.021.Search in Google Scholar

[4] W. Feng, W. Che, and Q. Xue, “Compact DSPSL ultra-wideband bandpass filter based on transversal signal-interaction concepts,” in 2013 IEEE International Wireless Symposium (IWS), Beijing, China, IEEE, 2013, pp. 1–4.10.1109/IEEE-IWS.2013.6616694Search in Google Scholar

[5] G. X. Wu, Y. Jin, W. Zhang, H. Wu, R. Jiang, and J. Shi, “Multi-functional balanced-to-single-ended filtering power divider with all-band output reflectionless and common-mode suppression,” AEU Int. J. Electron. Commun., vol. 178, 2024, Art. no. 155266, https://doi.org/10.1016/j.aeue.2024.155266.Search in Google Scholar

[6] Z. Tan, Q.-Y. Lu, and J.-X. Chen, “Differential dual-band filter using ground bar-loaded dielectric strip resonators,” IEEE Microw. Wireless Compon. Lett, vol. 30, no. 2, pp. 148–151, 2020, https://doi.org/10.1109/lmwc.2019.2957980.Search in Google Scholar

[7] H. Zhu and Y. J. Guo, “Dual-band and tri-band balanced-to-single ended power dividers with wideband common-mode suppression,” IEEE Trans. Circuits Syst. II, Exp. Briefs, vol. 68, no. 7, pp. 2332–2336, 2021, https://doi.org/10.1109/tcsii.2021.3054797.Search in Google Scholar

[8] H.-W. Deng, L. Sun, F. Liu, Y.-F. Xue, and T. Xu, “Compact tunable balanced bandpass filter with constant bandwidth based on magnetically coupled resonators,” IEEE Microw. Wireless Compon. Lett, vol. 29, no. 4, pp. 264–266, 2019, https://doi.org/10.1109/lmwc.2019.2902328.Search in Google Scholar

[9] F. Wei, B. Liu, Z. Li, et al., “Balanced dual-band BPF and FPD using quad-mode RLR with improved selectivity,” IEEE Trans. Circuits Syst. II, Exp. Briefs, vol. 69, no. 4, pp. 2081–2085, 2022, https://doi.org/10.1109/tcsii.2022.3142813.Search in Google Scholar

[10] Z. Zhang, G. Zhang, Z. Liu, W. Tang, and J. Yang, “Compact balanced bandpass filter based on equilateral triangular patch resonator,” IEEE Trans. Circuits Syst. II, Exp. Briefs, vol. 69, no. 1, pp. 90–93, 2022, https://doi.org/10.1109/tcsii.2021.3090425.Search in Google Scholar

[11] T. B. Lim and L. Zhu, “A differential-mode wideband bandpass filter on microstrip line for UWB application,” IEEE Microw. Wireless Compon. Lett, vol. 19, no. 10, pp. 632–634, 2009, https://doi.org/10.1109/lmwc.2009.2029739.Search in Google Scholar

[12] L.-L. Qiu and Q.-X. Chu, “Balanced bandpass filter using stub-loaded ring resonator and loaded coupled feed-line,” IEEE Microw. Wireless Compon. Lett, vol. 25, no. 10, pp. 654–656, 2015, https://doi.org/10.1109/lmwc.2015.2463228.Search in Google Scholar

[13] W. Feng, X. Gao, W. Che, W. Yang, and Q. Xue, “High selectivity wideband balanced filters with multiple transmission zeros,” IEEE Trans. Circuits Syst. II, Exp. Briefs, vol. 64, no. 10, pp. 1182–1186, 2017, https://doi.org/10.1109/tcsii.2015.2482398.Search in Google Scholar

[14] X. Gao, W. Feng, and W. Che, “High-selectivity wideband balanced filters using coupled lines with open/shorted stubs,” IEEE Microw. Wireless Compon. Lett, vol. 27, no. 3, pp. 260–262, 2017, https://doi.org/10.1109/lmwc.2017.2661998.Search in Google Scholar

[15] J.-X. Chen, Y. Zhan, W. Qin, Z.-H. Bao, and Q. Xue, “Novel narrow-band balanced bandpass filter using rectangular dielectric resonator,” IEEE Microw. Wireless Compon. Lett, vol. 25, no. 5, pp. 289–291, 2015, https://doi.org/10.1109/lmwc.2015.2409805.Search in Google Scholar

[16] Q. Liu, J. Wang, G. Zhang, L. Zhu, and W. Wu, “A new design approach for balanced bandpass filters on right-angled isosceles triangular patch resonator,” IEEE Microw. Wireless Compon. Lett, vol. 29, no. 1, pp. 5–7, 2019, https://doi.org/10.1109/lmwc.2018.2884829.Search in Google Scholar

[17] X.-H. Wang, Q. Xue, and W.-W. Choi, “A novel ultra-wideband differential filter based on double-sided parallel-strip line,” IEEE Microw. Wireless Compon. Lett, vol. 20, no. 8, pp. 471–473, 2010, https://doi.org/10.1109/lmwc.2010.2050869.Search in Google Scholar

[18] W. Feng, B. Pan, H. Zhu, X. Y. Zhou, W. Che, and Q. Xue, “High performance balanced bandpass filters with wideband common mode suppression,” IEEE Trans. Circuits Syst. II, Exp. Briefs, vol. 68, no. 6, pp. 1897–1901, 2021, https://doi.org/10.1109/tcsii.2020.3044092.Search in Google Scholar

[19] Y.-J. Lu, S.-Y. Chen, and P. Hsu, “A differential-mode wideband bandpass filter with enhanced common-mode suppression using slotline resonator,” IEEE Microw. Wireless Compon. Lett, vol. 22, no. 10, pp. 503–505, 2012, https://doi.org/10.1109/lmwc.2012.2218279.Search in Google Scholar

[20] X. Guo, L. Zhu, and W. Wu, “Optimized design of differential moderate-band BPF on coupled slotline resonators,” IEEE Microw. Wireless Compon. Lett, vol. 27, no. 3, pp. 263–265, 2017, https://doi.org/10.1109/lmwc.2017.2662020.Search in Google Scholar

[21] L.-P. Feng and L. Zhu, “Strip-loaded slotline resonator for compact differential-mode bandpass filters with improved upper stopband performance,” IEEE Microw. Wireless Compon. Lett, vol. 27, no. 2, pp. 108–110, 2017, https://doi.org/10.1109/lmwc.2016.2647140.Search in Google Scholar

[22] L. Yang and R. Gómez-García, “High-order quasi-elliptic-type single-ended and balanced wideband bandpass filters using microstrip-to-microstrip vertical transitions,” IEEE Trans. Circuits Syst. II, Exp. Briefs, vol. 70, no. 4, pp. 1425–1429, 2023, https://doi.org/10.1109/tcsii.2022.3223949.Search in Google Scholar

[23] Z. Li, F. Wei, B. Liu, and X. W. Shi, “Design of balanced wideband BPF based on tri-mode slotline resonators,” IEEE Trans. Circuits Syst. II, Exp. Briefs, vol. 69, no. 6, pp. 2767–2771, 2022, https://doi.org/10.1109/tcsii.2022.3159820.Search in Google Scholar

[24] H.-W. Deng, T. Zhang, F. Liu, and T. Xu, “High selectivity and CM suppression frequency-dependent coupling balanced BPF,” IEEE Trans. Circuits Syst. II, Exp. Briefs, vol. 28, no. 5, pp. 413–415, 2018, https://doi.org/10.1109/lmwc.2018.2811340.Search in Google Scholar

[25] Y. Zhu, K. Song, M. Fan, S. Guo, Y. Zhou, and Y. Fan, “Common-mode noise absorption circuit using double-sided parallel-strip line,” IEEE Microw. Wireless Compon. Lett, vol. 31, no. 1, pp. 25–28, 2021, https://doi.org/10.1109/lmwc.2020.3040440.Search in Google Scholar

[26] T. H. Duong and I. S. Kim, “New elliptic function type UWB BPF based on capacitively coupled λ/4 open T resonator,” IEEE Trans. Microw. Theor. Tech., vol. 57, no. 12, pp. 3089–3098, 2009, https://doi.org/10.1109/tmtt.2009.2033886.Search in Google Scholar

[27] M. K. M. Salleh, G. Prigent, O. Pigaglio, and R. Crampagne, “Quarter-wavelength side-coupled ring resonator for bandpass filters,” IEEE Trans. Microw. Theor. Techn., vol. 56, no. 1, pp. 156–162, 2008, https://doi.org/10.1109/tmtt.2007.912167.Search in Google Scholar

5 Supplementary Material

This article contains supplementary material (https://doi.org/10.1515/freq-2024-0312).

Received: 2024-10-06
Accepted: 2025-02-10
Published Online: 2025-03-04
Published in Print: 2025-10-27

© 2025 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. Review Articles
  3. Advances in antenna design through characteristic modes: a review of simulation techniques and development
  4. A review on soft computing optimization techniques for electromagnetics
  5. Editorial
  6. Design of wideband filtering phase shifters with wide stopband
  7. Research Articles
  8. Balanced BPFs with wideband CM suppression and high selectivity based on double-sided parallel-strip line
  9. Balanced dual-band BPF with enhanced DM selectivity and stopband suppression
  10. Balanced dual-wideband BPF utilizing quad-mode slotline resonator
  11. Design, fabrication and testing of microwave bandpass filter using metamaterial integrated rectangular waveguide
  12. High-gain UWB Fabry–Perot cavity antenna with dual-notched band for high-resolution imaging applications
  13. A four port MIMO antenna using chip resistor based decoupling in 5G and 6G applications
  14. Contactless early-stage deep seated breast tumor detection using circular slotted patch antenna
  15. An ultraminiaturized implantable antenna with low SAR for biotelemetry
https://doi.org/10.1515/freq-2024-0312
Keywords for this article
balanced bandpass filter (BPF); common-mode (CM) suppression; double-sided parallel strip line (DSPSL); high selectivity

Articles in the same Issue

  1. Frontmatter
  2. Review Articles
  3. Advances in antenna design through characteristic modes: a review of simulation techniques and development
  4. A review on soft computing optimization techniques for electromagnetics
  5. Editorial
  6. Design of wideband filtering phase shifters with wide stopband
  7. Research Articles
  8. Balanced BPFs with wideband CM suppression and high selectivity based on double-sided parallel-strip line
  9. Balanced dual-band BPF with enhanced DM selectivity and stopband suppression
  10. Balanced dual-wideband BPF utilizing quad-mode slotline resonator
  11. Design, fabrication and testing of microwave bandpass filter using metamaterial integrated rectangular waveguide
  12. High-gain UWB Fabry–Perot cavity antenna with dual-notched band for high-resolution imaging applications
  13. A four port MIMO antenna using chip resistor based decoupling in 5G and 6G applications
  14. Contactless early-stage deep seated breast tumor detection using circular slotted patch antenna
  15. An ultraminiaturized implantable antenna with low SAR for biotelemetry
Sign up now to receive a 20% welcome discount
Institutional Access
How does access work?
Have an idea on how to improve our website?
Please write us.
© 2025 De Gruyter Brill
Downloaded on 31.12.2025 from https://www.degruyterbrill.com/document/doi/10.1515/freq-2024-0312/html
Scroll to top button