Share This Article:

Broadband Miniaturized Bandpass Filter with Circular Stubs for Compact Wireless and Mobile Communication Systems

Abstract Full-Text HTML XML Download Download as PDF (Size:283KB) PP. 109-113
DOI: 10.4236/jemaa.2013.53018    4,233 Downloads   6,255 Views   Citations

ABSTRACT

A miniaturized square resonator bandpass filter with circular stubs is designed, fabricated, and characterized. Analytical calculations were carried out to determine the critical filter parameters and the design was optimized using a 3D electromagnetic finite-element solver. The measured results were in good agreement with the designed results. The proposed filter exhibits significant improvement in bandwidth compared to the conventional square resonator bandpass filters.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Y. Zhang and H. Song, "Broadband Miniaturized Bandpass Filter with Circular Stubs for Compact Wireless and Mobile Communication Systems," Journal of Electromagnetic Analysis and Applications, Vol. 5 No. 3, 2013, pp. 109-113. doi: 10.4236/jemaa.2013.53018.

References

[1] M. Sagawa, L. Takahashi and M. Makimoto, “Miniaturized Hairpin Resonator Filters and Their Application to Receiver Front-End MICs,” IEEE Transactions on Microwave Theory Techniques, Vol. 37, No. 12, 1989, pp. 1991-1997. doi:10.1109/22.44113
[2] J. S. Wong, “Microstrip Tapped-Line Filter Design,” IEEE Transactions on Microwave Theory Techniques, Vol. 27, No. 1, 1979, pp. 44-50. doi:10.1109/TMTT.1979.1129556
[3] E. G. Cristal and S. Frankel, “Hairpin-Line and Hybrid Hairpin Line/Half-Wave Parallel Coupled Line Filters,” IEEE Transactions on Microwave Theory Techniques, Vol. 20, No. 11, 1972, pp. 719-728. doi:10.1109/TMTT.1972.1127860
[4] Y. Di, P. Gardner, P. S. Hall, H. Ghafouri-Shiraz and J. Zhou, “Multiple-Coupled Microstrip Hairpin-Resonator Filter,” IEEE Microwave and Wireless Components Letters, Vol. 13, No. 12, 2003, pp. 532-534. doi:10.1109/LMWC.2003.819377
[5] A. Hasan and A. E. Nadeem, “Novel Microstrip Hairpin Narrowband Bandpass Filter Using via Ground Holes,” Progress in Electromagnetics Research, Vol. 78, 2008, pp. 393-419. doi:10.2528/PIER07091401
[6] M. Makimoto and S. Yamshita, “Bandpass Filters Using Parallel Coupled Stripline Stepped Impedance Resonators,” IEEE Transactions on Microwave Theory Techniques, Vol. 28, No. 12, 1980, pp. 1413-1417. doi:10.1109/TMTT.1980.1130258
[7] J. S. Hong and M. J. Lancaster, “End-Coupled Microstrip Slow-Wave Resonator Filters,” Electronics Letters, Vol. 32, No. 16, 1996, pp. 1494-1496. doi:10.1049/el:19960959
[8] T. Itoh and C. Y. Chang, “A Modified Parallel-Coupled Filter Structure Improves the Upper Stop-Band Performance and Response Symmetry,” IEEE Transactions on Microwave Theory Techniques, Vol. 39, No. 2, 1991, pp. 310-314. doi:10.1109/22.102975
[9] J. S. Hong and M. J. Lancaster, “Microstrip Slow-Wave Open-Loop Resonator Filters,” Proceedings of the International Microwave Symposium IEEE MTT-S, Denver, 8-13 June 1997, pp. 713-716. doi:10.1109/MWSYM.1997.602890
[10] L. Zhu and K. Wu, “Accurate Circuit Model of Interdigital Capacitor and its Application to Design of New QuasiLumped Miniaturized Filters with Suppression of Harmonic Resonance,” IEEE Transactions on Microwave Theory Techniques, Vol. 48, No. 3, 2000, pp. 347-356. doi:10.1109/22.826833
[11] S. Y. Lee and C. M. Tsai, “A New Network Model of Miniaturized Hairpin Resonators and Its Applications,” Proceedings of the International Microwave Symposium IEEE MTT-S, Boston, 11-16 June 2000, pp. 1161-1164. doi:10.1109/MWSYM.2000.863564
[12] H. A. Atwater, “Microstrip Reactive Circuit Elements,” IEEE Transactions on Microwave Theory Techniques, Vol. 31, No. 6, 1983, pp. 488-491. doi:10.1109/TMTT.1983.1131529
[13] F. Giannini, R. Sorrentino and J. Vrba, “Planar Circuit Analysis of Microstrip Radial Stub,” IEEE Transactions on Microwave Theory Techniques, Vol. 32, No. 12, 1984, pp. 1652-1655. doi:10.1109/TMTT.1984.1132907
[14] F. Giannini, M. Ruggieri and J. Vrba, “Shunt-Connected Microstrip Radial Stubs,” IEEE Transactions on Microwave Theory Techniques, Vol. 34, No. 3, 1986, pp. 363- 366. doi:10.1109/TMTT.1986.1133347
[15] J. S. Hong and M. J. Lancaster, “Microstrip Filters for RF/Microwave Applications,” John Wiley & Sons, Inc., New York, 2001. doi:10.1002/0471221619
[16] J. S. Hong and M. J. Lancaster, “Theory and Experiment of Novel Microstrip Slow-Wave Open-Loop Resonators Filters,” IEEE Transactions on Microwave Theory Techniques, Vol. 45, No. 12, 1997, pp. 2358-3465. doi:10.1109/22.643844
[17] G. Mattaei, L. Young and E. M. T. Jones, “Microwave Filters, Impedance-Matching Networks, and Coupling Structures,” Artech House, Norwood, 1980.
[18] ANSYS HFSS software. http://www.ansoft.com/products/hf/hfss/

  
comments powered by Disqus

Copyright © 2019 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.