Vol. 51

Front:[PDF file] Back:[PDF file]
Latest Volume
All Volumes
All Issues
2015-01-30

A Novel Compact Dual-Wideband Bandpass Filter with Multi-Mode Resonators

By Jun Li, Shan Shan Huang, Hui Wang, and Jian Zhong Zhao
Progress In Electromagnetics Research Letters, Vol. 51, 79-85, 2015
doi:10.2528/PIERL14122302

Abstract

A novel compact dual-wideband bandpass filter (BPF), with two multi-mode resonators (MMRs), a quad-mode one (QMR) and a triple-mode one (TMR), is proposed in this paper. The first passband is generated by a QMR loaded with a short-ended stub and two open-ended stubs, and the second one is realized by a TMR loaded with a square ring and a short-ended stub. Each passband can be tuned separately by controlling the corresponding resonator. The classical even-/odd-mode analysis is applied to characterize the presented MMRs due to their symmetric configurations. In order to validate the design methodology, a dual-wideband BPF prototype centered at 2.34 and 3.46 GHz with fractional bandwidths of 25.6% and 21.4% for WLAN and WiMAX applications is designed, fabricated and measured. Measurements have good agreement with simulations.

Citation


Jun Li, Shan Shan Huang, Hui Wang, and Jian Zhong Zhao, "A Novel Compact Dual-Wideband Bandpass Filter with Multi-Mode Resonators," Progress In Electromagnetics Research Letters, Vol. 51, 79-85, 2015.
doi:10.2528/PIERL14122302
http://www.jpier.org/PIERL/pier.php?paper=14122302

References


    1. Guo, L., Z.-Y. Yu, and L. Zhang, "Design of a dual-mode dual-band filter using stepped impedance resonators," Progress In Electromagnetics Research Letters, Vol. 14, 147-154, 2010.
    doi:10.2528/PIERL10032601

    2. Zhang, S. and L. Zhu, "Synthesis design of dual-band bandpass filters with λ/4 stepped-impedance resonators," IEEE Trans. Microw. Theory Tech., Vol. 61, No. 5, 1812-1819, May 2013.
    doi:10.1109/TMTT.2013.2256143

    3. Li, J., S. S. Huang, and J. Z. Zhao, "Design of a compact and high selectivity tri-band bandpass filter using asymmetric stepped-impedance resonators (SIRs)," Progress In Electromagnetics Research Letters, Vol. 44, 81-86, 2014.
    doi:10.2528/PIERL13112502

    4. 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, 2010.

    5. Chen, F.-C. and J. M. Qiu, "Third-order dual-band bandpass filter with controllable bandwidths using short stub-loaded resonators," Progress In Electromagnetics Research Letters, Vol. 32, 101-108, 2012.
    doi:10.2528/PIERL12050105

    6. Li, J., S. S. Huang, H. Wang, and J. Z. Zhao, "Compact dual-band bandpass filter using embedded center-grounded SIR and open-loop resonators," Progress In Electromagnetics Research Letters, Vol. 49, 9-14, 2014.

    7. Chen, F. C., Q. X. Chu, Z. H. Li, and X. H. Wu, "Compact dual-band bandpass filter with controllable bandwidths using stub-loaded multiple-mode resonator," IET Microw. Antennas Propag., Vol. 6, No. 10, 1172-1178, 2012.
    doi:10.1049/iet-map.2011.0523

    8. Chin, K.-S. and J.-H. Yeh, "Dual-wideband bandpass filter using short-circuited stepped-impedance resonators," IEEE Microw. Wireless Compon. Lett., Vol. 19, No. 3, 155-157, 2009.
    doi:10.1109/LMWC.2009.2013736

    9. Zhou, J.-G., W.-J. Feng, and W.-Q. Che, "Dual-wideband bandpass filter using T-shaped structure based on transversal signal-interaction concepts," Electron. Lett., Vol. 48, No. 24, 1539-1540, 2012.
    doi:10.1049/el.2012.3419

    10. Xu, J. and W. Wu, "Miniaturised dual-wideband bandpass filter using novel dual-band coupled-line sections," Electron. Lett., Vol. 49, No. 18, 1162-1163, 2013.
    doi:10.1049/el.2013.1665

    11. Li, J., S.-S. Huang, and J.-Z. Zhao, "Compact dual-wideband bandpass filter using a novel penta-mode resonator (PMR)," IEEE Microw. Wireless Compon. Lett., Vol. 24, No. 10, 668-670, 2014.
    doi:10.1109/LMWC.2014.2341014