Progress In Electromagnetics Research
ISSN: 1070-4698, E-ISSN: 1559-8985
Home | Search | Notification | Authors | Submission | PIERS Home | EM Academy
Home > Vol. 77 > pp. 493-499


By W. Xue, C.-H. Liang, D. Li, and J.-W. Fan

Full Article PDF (449 KB)

A novel dual-band planar filter is proposed in this paper. It is shown that the two transmission bands can be excited and designed using proposed resonators which combine different sizes of open-loop resonators. The main resonators control the low-band resonant frequency and the sub resonators control the high-band resonant frequency. With 0 feed structures added, the frequency selectivity of the filter is greatly improved. And the proposed filter also has advantages as low insertion loss and miniature size. The measurement of the filter is in good agreement with the simulation.

Citation: (See works that cites this article)
W. Xue, C.-H. Liang, D. Li, and J.-W. Fan, " design of miniature planar dual - band filter with 0 ° feed structures ," Progress In Electromagnetics Research, Vol. 77, 493-499, 2007.

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, No. 6, 789-792, 1997.

2. Quendo, C., E. Rius, and C. Person, "An original topology of dual-band filter with transmission zeros," IEEE MTT-S Int. Dig., Vol. 2, No. 6, 1093-1096, 2003.

3. Chang, S. F., J. L. Chen, and S. C. Chang, New dual-band bandpass filters with step-impedance resonators comb and hairpin structures, Proc. Asia Pacific Microwave Conf., 793-796, 2003.

4. Chang, S. F., Y. H. Jeng, and J. L. Chen, "Dual-band step-impedance bandpass filter for multimode wireless LANs," Electron. Lett., Vol. 40, No. 1, 38-39, 2004.

5. Chen, C.-Y., C.-Y. Hsu, and H.-R. Chuang, "Design of miniature planar dual-band filter using dual-feeding structures and embedded resonators," IEEE Microwave and Wireless Componets Letters, Vol. 16, No. 12, 669-671, 2006.

6. Tsai, C.-M., S.-Y. Lee, and C.-C. Tsai, "Performance of a planar filter using a zero-degree feed structure," IEEE Trans. Microw. Theory Tech., Vol. 50, No. 10, 2362-2367, 2002.

7. Hong, J. S. and M. J. Lancaster, "Couplings of microstrip square open-loop resonators for cross-coupled planar microwave filters," IEEE Trans. Microw. Theory Tech., Vol. 44, No. 11, 2099-2109, 1996.

8. Hong, J.-S. and M. J. Lancaster, MicrostripFilters for RF/Microwave Applications, Wiley, New York, 2001.

9. Dai, X.-W., C.-H. Liang, B. Wu, and J. Fan, "Novel dual-band bandpass filter design using microstrip open-loop resonators," Journal of Electromagnetic Waves and Applications, Vol. 22, No. 2, 219-225, 2008.

10. Wang, J. P., B.-Z. Wang, and W. Shao, "A novel partly shielded finite ground CPW low pass filter," Journal of Electromagnetic Waves and Applications, Vol. 19, No. 5, 689-696, 2005.

11. Xiao, J.-K., S.-P. Li, and Y. Li, "Novel planar bandpass filters using one single patch resonators with corner cuts," Journal of Electromagnetic Waves and Applications, Vol. 20, No. 11, 1481-1493, 2006.

12. Xiao, J.-K. and Y. Li, "Novel compact microstrip square ring bandpass filters," Journal of Electromagnetic Waves and Applications, Vol. 20, No. 13, 1817-1826, 2006.

13. Kazerooni, M. and A. Cheldavi, "Simulation, analysis, design and applications of array defected microstrip structure (ADMS) filters using rigorously coupled multi-strip (RCMS) method," Progress In Electromagnetics Research, Vol. 63, 193-207, 2006.

14. Khalaj-Amirhosseini, M., "Microwave filters using waveguides filled by multi-layer dielectric," Progress In Electromagnetics Research, Vol. 66, 105-110, 2006.

© Copyright 2014 EMW Publishing. All Rights Reserved