Vol. 13

Latest Volume
All Volumes
All Issues
2010-03-30

A Dual-Band Bandpass Filter Having Wide and Narrow Bands Simultaneously Using Multilayered Stepped Impedance Resonators

By Min-Hang Weng, Shih-Kun Liu, Hung-Wei Wu, and Chia-Ho Hung
Progress In Electromagnetics Research Letters, Vol. 13, 139-147, 2010
doi:10.2528/PIERL10022401

Abstract

Compact dual-band bandpass filter (BPF) with wide and narrow bands simultaneously is presented. By using the stepped impedance resonators (SIRs) in multilayered structure, the dual-band responses with wide and narrow bands simultaneously can be obtained. The filter has 3-dB fractional bandwidths (FBWs) of 45% and 10% for 2.4 GHz and 5.2 GHz, respectively. The circuit size is compact due to the multilayered structure. Moreover, multi-path propagation inside the multilayered structure generates transmission zeros at each skirt of the passbands for improving the passband selectivity. Measured results of the filter are in good agreement with the full-wave electromagnetic (EM) simulation.

Citation


Min-Hang Weng, Shih-Kun Liu, Hung-Wei Wu, and Chia-Ho 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
http://www.jpier.org/PIERL/pier.php?paper=10022401

References


    1. Miyake, H., S. Kitazawa, T. Ishizaki, T. Yamada, and Y. Nagatomi, A miniaturized monolithic dual band filter using ceramic lamination technique for dual mode portable telephones , IEEE MTT-S Int. Microw. Symp. Dig., Vol. 2, 789-792, 1997.

    2. Joshi, H. and W. J. Chappell, "Dual-band lumped-element bandpass filter," IEEE Trans. Microw. Theory Tech., Vol. 54, No. 12, 4169-4177, 2006.
    doi:10.1109/TMTT.2006.885576

    3. Tsai, L. C. and C. W. Huse, "Dual-band bandpass filters using equallength coupled-serial-shunted lines and Z-transform techniques," IEEE Trans. Microw. Theory Tech., Vol. 52, 1111-1117, 2004.
    doi:10.1109/TMTT.2004.825680

    4. 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, 2441-2449, 2009.

    5. Lee, C. H., C. I. G. Hsu, and Y. C. Chen, "Design of dual-band bandpass filter incorporating tri-section SIRs and CPW SIRs," Journal of Electromagnetic Waves and Applications, Vol. 18, 13-18, 2009.

    6. Weng, M. H., H. W. Wu, and Y. K. Su, "Compact and low oss dual-band bandpass filter using pseudo-interdigital stepped impedance resonators for WLANs," IEEE Microw. Wireless Compon. Lett., Vol. 17, 187-189, 2007.
    doi:10.1109/LMWC.2006.890463

    7. Chen, C. F., T. Y. Huang, and R. B. Wu, "Design of dual-and triple passband filters using alternately cascaded multiband resonators," IEEE Trans. Microw. Theory Tech., Vol. 54, 3550-3558, 2006.
    doi:10.1109/TMTT.2006.880653

    8. Lin, Y. S., W. C. Ku, C. H. Wang, and C. H. Chen, "Wideband coplanar-waveguide bandpass filters with good stopband rejection," IEEE Microw. Wireless Compon. Lett., Vol. 14, 422-424, 2004.

    9. Shanman, H. and J. S. Hong, "Input and output cross-coupled wideband bandpass filter," IEEE Trans. Microw. Theory Tech., Vol. 55, 2562-2568, 2007.
    doi:10.1109/TMTT.2007.910066

    10. Djoumessi, E. E. and K. Wu, "Multilayer dual-mode dual-bandpass filter," IEEE Microw. Wireless Compon. Lett., Vol. 19, 21-23, 2009.
    doi:10.1109/LMWC.2008.2008552

    11. Chen, C. C., "Dual-band bandpass filter using coupled resonator pairs," IEEE Microw. Wireless Compon. Lett., Vol. 15, 259-261, 2005.
    doi:10.1109/LMWC.2005.845735

    12. IE3D Simulator, Zeland Software, Inc., Fremont, CA, 1997.

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