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2011-11-30
Dual-Band Bandpass Filter with Controllable Characteristics Using Stub-Loaded Resonators
By
Progress In Electromagnetics Research Letters, Vol. 28, 45-51, 2012
Abstract
A compact microstrip-line dual-band bandpass filter with controllable characteristics is presented using a stub-loaded resonator. The resonator is formed by loading one open circuit terminated stub in shunt to a simple uniform impedance line. The passband frequencies of the dual-band filter can be conveniently controlled by tuning the lengths of stub-loaded resonators. The bandwidth of the first passband can be controlled by tuning the parameters of center stub-loaded resonator, and the bandwidth of the second passband is determined by the coupling between the sideward stub-loaded resonators. To illustrate the concept, a second-order dual-band filter is designed, fabricated and measured. Simulated and measured results are found in good agreement with each other.
Citation
Fu-Chang Chen, and Jie Ming Qiu, "Dual-Band Bandpass Filter with Controllable Characteristics Using Stub-Loaded Resonators," Progress In Electromagnetics Research Letters, Vol. 28, 45-51, 2012.
doi:10.2528/PIERL11100904
References

1. Chang, , S. F. R., W. L. Chen, S. C. Chang, C. K. Tu, C. L. Wei, C. H. Chien, C. H. Tsai, J. Chen, A. Chen, "A dual-band RF transceiver for multi-standard WLAN applications," IEEE Trans. Microw. Theory Tech., Vol. 53, 1048-1055, 2005.
doi:10.1109/TMTT.2005.843509

2. Zhang, X. Y., J. X. Chen, and Q. Xue, "Dual-band bandpass filter using stub-loaded resonators," IEEE Microw. Wireless Compon. Lett., Vol. 17, 583-585, 2007.
doi:10.1109/LMWC.2007.901768

3. Mondal, P. and M. K. Mandal, "Design of dual-band bandpass filters using stub-loaded open-loop resonators," IEEE Trans. Microw. Theory Tech., Vol. 56, 150-155, 2008.
doi:10.1109/TMTT.2007.912204

4. Zhou, M.-Q., X.-H. Tang, and F. Xiao, "Compact dual band bandpass filter using novel E-type resonators with controllable bandwidths," IEEE Microw. Wireless Compon. Lett., Vol. 18, 779-781, 2008.
doi:10.1109/LMWC.2008.2007696

5. Chu, Q. X., F. C. Chen, Z. H. Tu, and H. Wang, "A novel crossed resonator and its applications to bandpass filters," IEEE Trans. Microw. Theory Tech., Vol. 57, 1753-1759, 2009.
doi:10.1109/TMTT.2009.2022873

6. Chen, F. C. and Q. X. Chu, "Novel multistub loaded resonator and its application to high-order dual-band filters," IEEE Trans. Microwave Theory Tech., Vol. 58, 1551-1556, 2010.
doi:10.1109/TMTT.2010.2049161

7. Zhang, X. Y., C. H. Chan, Q. Xue, and B. J. Hu, "Dual-band bandpass filter with controllable bandwidths using two coupling paths," IEEE Microw. Wireless Compon. Lett., Vol. 20, 616-618, 2010.
doi:10.1109/LMWC.2010.2066553

8. Lee, J. R., J. H. Cho, and S. W. Yun, "New compact bandpass filter using microstrip λ/4 resonators with open stub inverter," IEEE Microwave Guided Wave Lett., Vol. 10, 526-527, 2000.
doi:10.1109/75.862229

9. Alkanhal, M. A. S., "Dual-band bandpass filters using inverted stepped-impedance resonators," Journal of Electromagnetic Waves and Applications, Vol. 23, No. 8-9, 1211-1220, 2009.

10. Lee , C. H., I. C. Wang, and C. I. G. Hsu, "Dual-band balanced BPF using λ/4 stepped-impedance resonators and folded feed lines," Journal of Electromagnetic Waves and Applications, Vol. 23, No. 17-18, 2441-2449, 2009.

11. Wang, J. P., B.-Z. Wang, Y. X. Wang, and Y.-X. Guo, "Dual-band microstrip stepped-impedance bandpass filter with defected ground structure," Journal of Electromagnetic Waves and Applications, Vol. 22, No. 4, 463-470, 2008.
doi:10.1163/156939308784150335

12. Weng, M.-H., C.-H. Kao, and Y.-C. Chang, "A compact dual-band bandpass filter using cross-coupled asymmetric SIRs for WLANs," Journal of Electromagnetic Waves and Applications, Vol. 24, No. 2-3, 161-168, 2010.
doi:10.1163/156939310790735679

13. Weng, M.-H., S.-K. Liu, H.-W. Wu, and C.-H. Hung, "A dual-band bandpass filter having wide and narrow bands simultaneously using multilayered stepped impedance resonators," Progress In Electromagnetics Research Letters, Vol. 13, 139-147, 2010.
doi:10.2528/PIERL10022401

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

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

17. Chen, F. C., Q. X. Chu, and Z. H. Tu, "Tri-band bandpass filter using stub loaded resonators," Electron. Lett., Vol. 44, 747-749, 2008.
doi:10.1049/el:20081054

18. Velazquez-Ahumada, M. D. C., J. Martel-Villagr, F. Medina, and F. Mesa, "Application of stub loaded folded stepped impedance resonators to dual band filter design," Progress In Electromagnetic Research, Vol. 102, 107-124, 2010.
doi:10.2528/PIER10011406

19. Amari, S., U. Rosenberg, and J. Bornemann, "Adaptive synthesis and design of resonator filters with source/load-multi-resonator coupling," IEEE Trans. Microw. Theory Tech., Vol. 50, 1969-1978, 2002.
doi:10.1109/TMTT.2002.801348

20. Thomas, J. B., "Cross-coupling in coaxial cavity filters --- A tutorial overview," IEEE Trans. Microw. Theory Tech., Vol. 51, 1368-1376, 2003.
doi:10.1109/TMTT.2003.809180