{"title":"Compact Dual-Band Bandpass Filter Based on Quarter Wavelength Stepped Impedance Resonators","authors":"Yu-Fu Chen, Zih-Jyun Dai, Chen-Te Chiu, Shiue-Chen Chiou, Yung-Wei Chen, Yu-Ming Lin, Kuan-Yu Chen, Hung-Wei Wu, Hsin-Ying Lee, Yan-Kuin Su, Shoou-Jinn Chang","volume":112,"journal":"International Journal of Electrical and Computer Engineering","pagesStart":517,"pagesEnd":521,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/10004208","abstract":"
This paper presents a compact dual-band bandpass filter that involves using the quarter wavelength stepped impedance resonators (SIRs) for achieving simultaneously compact circuit size and good dual-band performance. The filter is designed at 2.4 \/ 3.5 GHz and constructed by two pairs of quarter wavelength SIRs and source-load lines. By properly tuning the impedance ratio, length ratio and radius of via hole of the SIRs, dual-passbands performance can be easily determined. To improve the passband selectivity, the use of source-load lines is to increase coupling energy between the resonators. The filter is showing simple configuration, effective design method and small circuit size. The measured results are in good agreement with the simulation results.<\/p>\r\n","references":"[1]\tJ. S. Hong and M. J. Lancaster, Microstrip Filters for RF\/Microwave Application, 2nd ed. New York: Wiley, 2011.\r\n[2]\tH. W. Wu, Y. F. Chen and Y. W. Chen, \u201cMulti-layered dual-band bandpass filter using stub-loaded stepped-impedance and uniform-impedance resonators,\u201d IEEE Microw. Wireless Compon. Lett., vol. 22, no. 3, pp. 114\u2013116, Mar. 2012.\r\n[3]\tF. C. Chen and Q. X. Chu, \u201cNovel multi stub loaded resonator and its application to high-order dual-band filters,\u201d IEEE Trans. Microw. Theory Tech., vol. 58, no. 6, pp. 1551\u20131556, Jun. 2010.\r\n[4]\tC. H. Tseng and H. Y. Shao, \u201cA new dual-band microstrip bandpass filter using net-type resonators,\u201d IEEE Microw. Wireless Compon. Lett., vol. 20, no. 4, pp. 196\u2013198, Apr. 2010.\r\n[5]\tW. S. Chang and C. Y. Chang, \u201cAnalytical design of microstrip short circuit terminated stepped-impedance resonator dual-band filter,\u201d IEEE Trans. Microw. Theory Tech., vol. 59, no. 7, pp. 1730\u20131739, Jul. 2011.\r\n[6]\tX. Y. Zhang, C. H. Chan, Q. Xue and B. J. Hu, \u201cDual-Band Bandpass Filter With Controllable Bandwidths Using Two Coupling Paths,\u201d IEEE Microw. Wireless Compon. Lett, vol. 20, no. 11, pp. 616-618, Nov. 2010.\r\n[7]\tC. W. Tang and P. H. Wu, \u201cDesign of a Planar Dual-Band Bandpass Filter,\u201d IEEE Microw. Wireless Compon. Lett, vol. 21, no. 7, pp. 362-364, July. 2011.\r\n[8]\tP. H. Deng and J. H. Jheng, \u201cA switched reconfigurable high-isolation dual-band bandpass filter,\u201d IEEE Microw. Wireless Compon. Lett., vol. 21, no. 2, pp. 71\u201373, Feb. 2011.\r\n[9]\tM. Makimoto, and S. Yamashita, \u201cBandpass filters using parallel coupled stripline stepped impedance resonators,\u201d IEEE Trans. Microw. Theory Tech., vol. 28, pp. 1413-1417, Dec. 1980.\r\n[10]\tH. W. Deng, Y. J. Zhao, Y. Fu, X. J. Zhou, and Y. Y. Liu, \u201cCompact And High Selectivity Dual-mode Dual-band Microstrip BPF With Qwr And SLR\u201d Microw And Optical Technology Lett., vol. 000, no. 000, pp. 2702-2705, Dec. 2012.\r\n[11]\tV. Barbuddhye and A. Kakade, \u201cDual-band Bandpass Filter Based On \u03bb\/4-Resonators For Wi-Fi Application,\u201d Microw And Optical Technology Lett., vol. 57, no. 12, pp. 2758-2761, Dec. 2015.\r\n[12]\tL. Lin, P. P. Xu, J. L. Liu, B. Wu, T. Su and C. C. Liang, \u201cDual- Band Bandpass Filters Using a Novel Quad-Mode Stub-Loaded Ring Resonator,\u201d Progress In Electromagnetics Research, vol.55, pp. 31-38, Aug. 2015.\r\n[13]\tIE3D Simulator, Zeland Software, Inc. 2002.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 112, 2016"}