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2009-06-12
A New Approach of Dual-Band Filters by Stepped Impedance Simplified Cascaded Quadruplet Resonators with Slot Coupling
By
Progress In Electromagnetics Research Letters, Vol. 9, 19-28, 2009
Abstract
This paper presents novel approaches for dual-band bandpass filter design utilizing stepped impedance simplified cascaded quadruplet resonators (SI-SCQRs) with slot coupling. A pair of SI-SCQRs forms a cross coupled dual-band filtering path to provide high selectivity passband response, and a slot coupling structure provides SI-SCQRs with another filtering path for improving and controlling the performances of the dual-band filter such as insertion loss and bandwidth. Measured insertion losses are 0.26 dB and 1.2 dB and return losses are better than 16.3 dB and 15.2 dB at the first and second passband frequencies, respectively, with a mid-stopband attenuation around 30 dB.
Citation
Wen-Jeng Lin, Chin-Sheng Chang, Jian-Yi Li, Ding-Bing Lin, Lih-Shan Chen, and Mau-Phon Houng, "A New Approach of Dual-Band Filters by Stepped Impedance Simplified Cascaded Quadruplet Resonators with Slot Coupling," Progress In Electromagnetics Research Letters, Vol. 9, 19-28, 2009.
doi:10.2528/PIERL09042801
References

1. Tsai, L. C. and C. W. Hsue, "Dual-band bandpass filters using equal-length coupled-serial-shunted lines and Z-transform technique," IEEE Trans. Microw. Theory Tech., Vol. 52, No. 4, 1111-1117, Apr. 2004.
doi:10.1109/TMTT.2004.825680

2. Wu, G.-L., W. Mu, X.-W. Dai, and Y.-C. Jiao, "Design of novel dual-band bandpass filter with microstrip meander-loop resonator and CSRR DGS," Progress In Electromagnetics Research, Vol. 78, 17-24, 2008.
doi:10.2528/PIER07090301

3. Huang, T. H., H. J. Chen, C. S. Chang, L. S. Chen, Y. H. Wang, and M. P. Houng, "A novel compact ring dual-mode filter with adjustable second-passband for dual-band applications," IEEE Microw. Wireless Compon. Lett., Vol. 16, No. 6, 360-362, Jun. 2006.
doi:10.1109/LMWC.2006.875607

4. Chen, Z.-X., X.-W. Dai, and C.-H. Liang, "Novel dual-mode dual-band bandpass filter using double square-loop structure," Progress In Electromagnetics Research, Vol. 77, 409-416, 2007.
doi:10.2528/PIER07082803

5. Zhao, L.-P., X.-W. Dai, Z.-X. Chen, and C.-H. Liang, "Novel design of dual-mode dual-band bandpass filter with triangular resonators," Progress In Electromagnetics Research, Vol. 77, 417-424, 2007.
doi:10.2528/PIER07090501

6. Sun, S. and L. Zhu, "Compact dual-band microstrip bandpass filter without external feeds," IEEE Microw. Wireless Compon. Lett., Vol. 15, No. 10, 644-646, Oct. 2005.

7. Liu, A. S., T. Y. Huang, and R. B. Wu, "A dual wideband filter design using frequency mapping and stepped-impedance resonators," IEEE Trans. Microw. Theory Tech., Vol. 56, No. 12, 2921-2929, Dec. 2008.
doi:10.1109/TMTT.2008.2007357

8. Chu, Q. X. and F. C. Chen, "A compact dual-band bandpass filter using meandering stepped impedance resonators," IEEE Microw. Wireless Compon. Lett., Vol. 18, No. 5, 320-322, May 2008.

9. Xue, W., C.-H. Liang, X.-W. Dai, and J.-W. Fan, "Design of miniature planar dual-band filter with 0ο feed structures," Progress In Electromagnetics Research, Vol. 77, 493-499, 2007.
doi:10.2528/PIER07090502

10. Chen, C. Y. and C. Y. Hsu, "A simple and effective method for microstrip dual-band filters design," IEEE Microw. Wireless Compon. Lett., Vol. 16, No. 5, 246-248, May 2006.
doi:10.1109/LMWC.2006.873584

11. Singh, P. K., S. Basu, and Y. H. Wang, "Miniature dual-band filter using quarter wavelength stepped impedance resonators," IEEE Microw. Wireless Compon. Lett., Vol. 18, No. 2, 88-90, Feb. 2008.
doi:10.1109/LMWC.2007.915032

12. Wu, B., C. H. Liang, Q. Li, and P. Y. Qin, "Novel dual-band filter incorporating defected SIR and microstrip SIR," IEEE Microw. Wireless Compon. Lett., Vol. 18, No. 6, 392-394, Jun. 2008.
doi:10.1109/LMWC.2008.922614

13. Kuo, J. T. and H. S. Cheng, "Design of quasi-elliptic function filters with a dual-passband response," IEEE Microw. Wireless Compon. Lett., Vol. 14, No. 10, 472-474, Oct. 2004.
doi:10.1109/LMWC.2004.834560

14. Fan, J.-W., C.-H. Liang, and X.-W. Dai, "Design of cross-coupled dual-band filter with equal-length split-ring resonators," Progress In Electromagnetics Research, Vol. 75, 285-293, 2007.
doi:10.2528/PIER07060904

15. Hong, J. S. and M. J. Lancaster, Microstrip Filters for RF/Microwave Application, 315-377, Wiley, 2001.
doi:10.1002/0471221619.ch10

16. Makimoto, M. and S. Yamashita, "Bandpass filters using parallel coupled stripline stepped impedance resonators," IEEE Trans. Microw. Theory Tech., Vol. 28, No. 12, 1413-1417, Dec. 1980.
doi:10.1109/TMTT.1980.1130258