Vol. 37

Front:[PDF file] Back:[PDF file]
Latest Volume
All Volumes
All Issues
2013-02-01

Dual-Mode Dual-Band Bandpass Filter Based on Square Loop Resonator

By Kun Deng, Shuai Yang, Shou-Jia Sun, Bian Wu, and Xiao-Wei Shi
Progress In Electromagnetics Research C, Vol. 37, 119-130, 2013
doi:10.2528/PIERC13010605

Abstract

In this paper, a dual-mode dual-band microstrip bandpass filter utilizing asymmetric square loop resonators is proposed. A pair of bent open-circuited stubs is installed to the loop as perturbation stubs. By stretching the perturbation stubs more than half-wavelength of the loop, the degenerated modes in a loop are split for dual-band operation. Two asymmetric resonators are cascaded to form two bands. Even- and odd-mode analysis method is used to deduce the resonant frequencies of two bands. Based on the transmission line theory, resonant frequencies of the two resonances are derived. According to the resonant conditions, a kind of dual-mode dual-band bandpass filter can be easily designed. Finally, a dual-band filter with two bands centering at 1.9 GHz and 2.6 GHz is designed in a comprehensive way. Measured results of experimental circuit show good agreement with simulated responses.

Citation


Kun Deng, Shuai Yang, Shou-Jia Sun, Bian Wu, and Xiao-Wei Shi, "Dual-Mode Dual-Band Bandpass Filter Based on Square Loop Resonator," Progress In Electromagnetics Research C, Vol. 37, 119-130, 2013.
doi:10.2528/PIERC13010605
http://jpier.org/PIERC/pier.php?paper=13010605

References


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

    2. Wang, X.-H., B.-Z. Wang, and K. J. Chen, "Compact broadband dual-band bandpass filters using slotted ground structures," Progress In Electromagnetics Research, Vol. 82, 151-166, 2008.
    doi:10.2528/PIER08030101

    3. 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

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

    5. Ma, D.-C., Z.-Y. Xiao, L.-L. Xiang, X.-H. Wu, C.-Y. Huang, and X. Kou, "Compact dual-band bandpass filter using folded SIR with two stubs for WLAN," Progress In Electromagnetics Research, Vol. 117, 357-364, 2011.

    6. Kuo, J.-T. and S.-W. Lai, "New dual-band bandpass filter with wide upper rejection band," Progress In Electromagnetics Research, Vol. 123, 371-384, 2012.
    doi:10.2528/PIER11112304

    7. Kuo, J.-T., C.-Y. Fan, and S.-C. Tang, "Dual-wideband bandpass filters with extended stopband based on coupled-line and coupled three-line resonators," Progress In Electromagnetics Research, Vol. 124, 1-15, 2012.
    doi:10.2528/PIER11120103

    8. Luo, S., L. Zhu, and S. Sun, "A dual-band ring-resonator bandpass filter based on two pairs of degenerate modes," IEEE Trans. Microw. Theory Tech., Vol. 58, No. 12, 3427-3432, Dec. 2010.

    9. 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

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

    11. 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

    12. Deng, K., B. Wu, S.-J. Sun, and C.-H. Liang, "Dual-band filter based on dual-stubs loaded square loop resonator," Int. Conf. Microw. Millimeter Wave Technol., ICMMT --- Proc, 1-3, May 2012.

    13. Chiou, Y.-C. , P.-S. Yang, J.-T. Kuo, and C.-Y.Wu, "Transmission zero design graph for dual-mode dual-band filter with periodic stepped-impedance ring resonator," Progress In Electromagnetics Research, Vol. 108, 23-36, 2010.
    doi:10.2528/PIER10071608

    14. Matsuo, M., H. Yabuki, and M. Makimoto, "Dual-mode stepped-impedance ring resonator for bandpass filter applications," IEEE Trans. Microw. Theory Tech., Vol. 49, No. 7, 1235-1240, Jul. 2007.
    doi:10.1109/22.932241

    15. Fu, S., B.Wu, J. Chen, S.-J. Sun, and C.-H. Liang, "Novel second-order dual-mode dual-band filters using capacitance loaded square loop resonator," IEEE Trans. Microw. Theory Tech., Vol. 60, No. 3, 477-483, Mar. 2012.
    doi:10.1109/TMTT.2011.2181859

    16. Wang, Y.-Z. and M.-L. Her, "Compact microstrip bandstop filters using stepped-impedance resonator (SIR) and spur-line sections," IEE Proc., Microw. Antennas Propag., Vol. 153, 435-440, UK, Oct. 2006.

    17. Zhang, X.-Y., J.-X. Chen, Q. Xue, and S.-M. Li, "Dual-band bandpass filters using stub-loaded resonators," IEEE Microw. Wireless Compon. Lett., Vol. 17, No. 8, 583-585, Aug. 2007.
    doi:10.1109/LMWC.2007.901768