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2020-09-22
Analysis and Design of a New Ring Bandstop Filter Using Lumped Equivalent Circuit
By
Progress In Electromagnetics Research Letters, Vol. 93, 81-87, 2020
Abstract
A new ring wideband bandstop filter (BSF) and its exact design method is proposed and investigated in this letter. The BSF is devised by introducing an additional transmission line to a traditional hairpin bandstop filter in parallel, hence giving enhanced selectivity and attenuation performance. A lumped lowpass equivalent circuit is introduced to explain the mechanism of the filter. Rigorous correspondence between the BSF and its equivalent circuit is established by comparing their even- and odd-mode input admittances. This enables the BSF to be synthesized the same way as lumped filters. Both the BSF and the method have been documented by a design example.
Citation
Chaoyue Yang, and Chengfang Fu, "Analysis and Design of a New Ring Bandstop Filter Using Lumped Equivalent Circuit," Progress In Electromagnetics Research Letters, Vol. 93, 81-87, 2020.
doi:10.2528/PIERL20073004
References

1. Levy, R, R. V. Snyder, and S. Shin, "Bandstop filters with extended upper passbands," IEEE Transactions on Microwave Theory and Techniques, Vol. 54, No. 6, 2503-2515, Jun. 2006.
doi:10.1109/TMTT.2006.875804

2. Liu, G. and Y. Wu, "Novel in-line microstrip coupled-line band-stop filter with sharp skirt selectivity," Progress In Electromagnetics Research, Vol. 137, 585-597, 2013.
doi:10.2528/PIER13011908

3. Yeo, K. S. K. and P. Vijaykumar, "Quasi-elliptic microstrip bandstop filter using tap coupled open-loop resonators," Progress In Electromagnetics Research C, Vol. 35, 1-11, 2013.

4. Malherbe, J. A., "Pseudo-elliptic bandstop filter with 1 : 2 : 3 harmonic ratio stubs," Electronics Letters, Vol. 49, No. 2, 130-131, 2013.
doi:10.1049/el.2012.3695

5. Chen, F. C., R. S. Li, J. M. Qiu, and Q. X. Chu, "Sharp-rejection wideband bandstop filter using stepped impedance resonators," IEEE Transactions on Components, Packaging and Manufacturing Technology, Vol. 7, No. 3, 444-449, Mar. 2017.
doi:10.1109/TCPMT.2016.2646724

6. Wenzel, R. J., "Small elliptic-function low-pass filters and other applications of microwave C sections ," IEEE Transactions on Microwave Theory and Techniques, Vol. 18, No. 12, 1150-1158, Dec. 1970.
doi:10.1109/TMTT.1970.1127424

7. Luo, S., L. Zhu, and S. Sun, "Stopband-expanded low-pass filters using microstrip coupled-line hairpin units," IEEE Microwave and Wireless Components Letters, Vol. 18, No. 8, 506-508, Aug. 2008.
doi:10.1109/LMWC.2008.2001004

8. Ma, K. and K. S. Yeo, "New ultra-wide stopband low-pass filter using transformed radial stubs," IEEE Transactions on Microwave Theory and Techniques, Vol. 59, No. 3, 604-611, Mar. 2011.
doi:10.1109/TMTT.2010.2095031

9. Shaman, H. and J. S. Hong, "Wideband bandstop filter with cross-couplin," IEEE Transactions on Microwave Theory and Techniques, Vol. 55, No. 8, 1780-1785, Aug. 2007.
doi:10.1109/TMTT.2007.901600

10. Liang, L. M., Y. A. Liu, J. C. Li, S. L. Li, C. P. Yu, Y. L. Wu, and M. Su, "A novel wide-stopband bandstop filter with sharp-rejection characteristic and analytical theory," Progress In Electromagnetics Research C, Vol. 40, 143-158, 2013.
doi:10.2528/PIERC13050114

11. Her, M.-L., Q.-M. Lin, K.-Y. Lin, Y.-D. Wu, and Y.-L. Wang, "Dual-mode and three-transmission-zeros bandstop filters with closed-loop ring resonators," Microwave and Optical Technology Theory Letters, Vol. 44, No. 2, 114-118, Jan. 2005.
doi:10.1002/mop.20562

12. Mandal, M. K. and P. Mondal, "Design of sharp-rejection, compact, wideband bandstop filters," IET Microwave Antennas & Propagation, Vol. 2, No. 4, 389-393, 2008.
doi:10.1049/iet-map:20070212

13. Sánchez-Soriano, M. Á., G. Torregrosa-Penalva, and E. Bronchalo, "Compact wideband bandstop filter with four transmission zeros," IEEE Microwave and Wireless Components Letters, Vol. 20, No. 6, 313-315, Jun. 2010.
doi:10.1109/LMWC.2010.2047468

14. Cui, D., Y. Liu, Y. Wu, S. Li, and C. Yu, "A compact bandstop filter based on two meandered parallel-coupled lines," Progress in Electromagnetics Research, Vol. 121, 271-279, 2011.
doi:10.2528/PIER11061902

15. Muñoz-Ferreras, J.-M. and R. Gómez-García, "A digital interpretation of frequency-periodic signal-interference microwave passive filters," IEEE Transactions on Microwave Theory and Techniques, Vol. 62, No. 11, 2633-2640, Nov. 2014.
doi:10.1109/TMTT.2014.2359647