Vol. 69
Latest Volume
All Volumes
PIERL 108 [2023] PIERL 107 [2022] PIERL 106 [2022] PIERL 105 [2022] PIERL 104 [2022] PIERL 103 [2022] PIERL 102 [2022] PIERL 101 [2021] PIERL 100 [2021] PIERL 99 [2021] PIERL 98 [2021] PIERL 97 [2021] PIERL 96 [2021] PIERL 95 [2021] PIERL 94 [2020] PIERL 93 [2020] PIERL 92 [2020] PIERL 91 [2020] PIERL 90 [2020] PIERL 89 [2020] PIERL 88 [2020] PIERL 87 [2019] PIERL 86 [2019] PIERL 85 [2019] PIERL 84 [2019] PIERL 83 [2019] PIERL 82 [2019] PIERL 81 [2019] PIERL 80 [2018] PIERL 79 [2018] PIERL 78 [2018] PIERL 77 [2018] PIERL 76 [2018] PIERL 75 [2018] PIERL 74 [2018] PIERL 73 [2018] PIERL 72 [2018] PIERL 71 [2017] PIERL 70 [2017] PIERL 69 [2017] PIERL 68 [2017] PIERL 67 [2017] PIERL 66 [2017] PIERL 65 [2017] PIERL 64 [2016] PIERL 63 [2016] PIERL 62 [2016] PIERL 61 [2016] PIERL 60 [2016] PIERL 59 [2016] PIERL 58 [2016] PIERL 57 [2015] PIERL 56 [2015] PIERL 55 [2015] PIERL 54 [2015] PIERL 53 [2015] PIERL 52 [2015] PIERL 51 [2015] PIERL 50 [2014] PIERL 49 [2014] PIERL 48 [2014] PIERL 47 [2014] PIERL 46 [2014] PIERL 45 [2014] PIERL 44 [2014] PIERL 43 [2013] PIERL 42 [2013] PIERL 41 [2013] PIERL 40 [2013] PIERL 39 [2013] PIERL 38 [2013] PIERL 37 [2013] PIERL 36 [2013] PIERL 35 [2012] PIERL 34 [2012] PIERL 33 [2012] PIERL 32 [2012] PIERL 31 [2012] PIERL 30 [2012] PIERL 29 [2012] PIERL 28 [2012] PIERL 27 [2011] PIERL 26 [2011] PIERL 25 [2011] PIERL 24 [2011] PIERL 23 [2011] PIERL 22 [2011] PIERL 21 [2011] PIERL 20 [2011] PIERL 19 [2010] PIERL 18 [2010] PIERL 17 [2010] PIERL 16 [2010] PIERL 15 [2010] PIERL 14 [2010] PIERL 13 [2010] PIERL 12 [2009] PIERL 11 [2009] PIERL 10 [2009] PIERL 9 [2009] PIERL 8 [2009] PIERL 7 [2009] PIERL 6 [2009] PIERL 5 [2008] PIERL 4 [2008] PIERL 3 [2008] PIERL 2 [2008] PIERL 1 [2008]
2017-07-26
Tri-Mode Bandwidth-Tunable Filter Based on Microstrip-to-CPW Resonator
By
Progress In Electromagnetics Research Letters, Vol. 69, 99-104, 2017
Abstract
A novel microstrip-to-CPW resonator is presented, which can be employed to design bandwidth-tunable bandpass filter. The tri-mode resonator is composed of a dual-mode microstrip resonator and a CPW stub printed on a single piece of substrate. Two varactors embedded in the resonator are utilized to adjust the frequencies of the first and third resonant modes independently, thus flexible bandwidth control can be achieved. For demonstration, a prototypical filter is implemented with fixed center frequency of 1.72 GHz and 9.3%-32.6% fractional bandwidth (FBW) tuning range. Good agreement is obtained between the simulated and experimental results.
Citation
Jian-Quan Huang Zhi-Han Chen , "Tri-Mode Bandwidth-Tunable Filter Based on Microstrip-to-CPW Resonator," Progress In Electromagnetics Research Letters, Vol. 69, 99-104, 2017.
doi:10.2528/PIERL17052304
http://www.jpier.org/PIERL/pier.php?paper=17052304
References

1. Hsieh, L.-H. and K. Chang, "Tunable microstrip bandpass filters with two transmission zeros," IEEE Transactions on Microwave Theory and Techniques, Vol. 51, No. 2, 520-525, Feb. 2003.
doi:10.1109/TMTT.2002.807830

2. Ahn, C. H., D. J. Jung, and K. Chang, "Compact parallel-coupled line bandpass filter using double complementary split ring resonators," Microwave and Optical Technology Letters, Vol. 55, No. 3, 506-509, Mar. 2013.
doi:10.1002/mop.27373

3. Chen, Z. H. and Q. X. Chu, "Reconfigurable bandpass filter with electric coupling and constant absolute bandwidth," Microwave and Optical Technology Letters, Vol. 58, No. 6, 1401-1404, Jun. 2016.
doi:10.1002/mop.29835

4. Chiou, Y. C. and G. M. Rebeiz, "A tunable three-pole 1.5-2.2-GHz bandpass filter with bandwidth and transmission zero control," IEEE Transactions on Microwave Theory and Techniques, Vol. 59, No. 11, 2872-2878, Sep. 2011.
doi:10.1109/TMTT.2011.2164619

5. Chi, P. L., T. Yang, and T. Y. Tsai, "A fully tunable two-pole bandpass filter," IEEE Microwave and Wireless Components Letters, Vol. 25, No. 5, 292-294, Mar. 2015.
doi:10.1109/LMWC.2015.2409794

6. Chaudhary, G., Y. Jeong, and J. Lim, "Dual-band bandpass filter with independently tunable center frequencies and bandwidths," IEEE Transactions on Microwave Theory and Techniques, Vol. 61, No. 1, 107-116, Nov. 2013.
doi:10.1109/TMTT.2012.2222910

7. Huang, X., Q. Feng, and Q. Xiang, "Bandpass filter with tunable bandwidth using quadruple-mode stub-loaded resonator," IEEE Microwave and Wireless Components Letters, Vol. 22, No. 4, 176-178, Apr. 2012.
doi:10.1109/LMWC.2012.2188280

8. Huang, X., et al., "Triple-mode dual-band bandpass filter on microstrip-to-CPW structure," Wireless Symposium (IWS), 2014 IEEE International. IEEE, 1-4, 2014.