Vol. 74
Latest Volume
All Volumes
PIERC 129 [2023] PIERC 128 [2023] PIERC 127 [2022] PIERC 126 [2022] PIERC 125 [2022] PIERC 124 [2022] PIERC 123 [2022] PIERC 122 [2022] PIERC 121 [2022] PIERC 120 [2022] PIERC 119 [2022] PIERC 118 [2022] PIERC 117 [2021] PIERC 116 [2021] PIERC 115 [2021] PIERC 114 [2021] PIERC 113 [2021] PIERC 112 [2021] PIERC 111 [2021] PIERC 110 [2021] PIERC 109 [2021] PIERC 108 [2021] PIERC 107 [2021] PIERC 106 [2020] PIERC 105 [2020] PIERC 104 [2020] PIERC 103 [2020] PIERC 102 [2020] PIERC 101 [2020] PIERC 100 [2020] PIERC 99 [2020] PIERC 98 [2020] PIERC 97 [2019] PIERC 96 [2019] PIERC 95 [2019] PIERC 94 [2019] PIERC 93 [2019] PIERC 92 [2019] PIERC 91 [2019] PIERC 90 [2019] PIERC 89 [2019] PIERC 88 [2018] PIERC 87 [2018] PIERC 86 [2018] PIERC 85 [2018] PIERC 84 [2018] PIERC 83 [2018] PIERC 82 [2018] PIERC 81 [2018] PIERC 80 [2018] PIERC 79 [2017] PIERC 78 [2017] PIERC 77 [2017] PIERC 76 [2017] PIERC 75 [2017] PIERC 74 [2017] PIERC 73 [2017] PIERC 72 [2017] PIERC 71 [2017] PIERC 70 [2016] PIERC 69 [2016] PIERC 68 [2016] PIERC 67 [2016] PIERC 66 [2016] PIERC 65 [2016] PIERC 64 [2016] PIERC 63 [2016] PIERC 62 [2016] PIERC 61 [2016] PIERC 60 [2015] PIERC 59 [2015] PIERC 58 [2015] PIERC 57 [2015] PIERC 56 [2015] PIERC 55 [2014] PIERC 54 [2014] PIERC 53 [2014] PIERC 52 [2014] PIERC 51 [2014] PIERC 50 [2014] PIERC 49 [2014] PIERC 48 [2014] PIERC 47 [2014] PIERC 46 [2014] PIERC 45 [2013] PIERC 44 [2013] PIERC 43 [2013] PIERC 42 [2013] PIERC 41 [2013] PIERC 40 [2013] PIERC 39 [2013] PIERC 38 [2013] PIERC 37 [2013] PIERC 36 [2013] PIERC 35 [2013] PIERC 34 [2013] PIERC 33 [2012] PIERC 32 [2012] PIERC 31 [2012] PIERC 30 [2012] PIERC 29 [2012] PIERC 28 [2012] PIERC 27 [2012] PIERC 26 [2012] PIERC 25 [2012] PIERC 24 [2011] PIERC 23 [2011] PIERC 22 [2011] PIERC 21 [2011] PIERC 20 [2011] PIERC 19 [2011] PIERC 18 [2011] PIERC 17 [2010] PIERC 16 [2010] PIERC 15 [2010] PIERC 14 [2010] PIERC 13 [2010] PIERC 12 [2010] PIERC 11 [2009] PIERC 10 [2009] PIERC 9 [2009] PIERC 8 [2009] PIERC 7 [2009] PIERC 6 [2009] PIERC 5 [2008] PIERC 4 [2008] PIERC 3 [2008] PIERC 2 [2008] PIERC 1 [2008]
2017-05-15
Compact Microstrip Lowpass Filter with an Ultra-Wide Stopband and Sharp Transition Band Using T-Shaped and Polygon Resonators
By
Progress In Electromagnetics Research C, Vol. 74, 51-61, 2017
Abstract
In this paper, a lowpass filter with -3 dB cutoff frequency of 5.3 GHz using T-shaped and polygon resonators is presented. The applied resonators create a sharp transition band of 0.2 GHz from -3 dB to -40 dB. To obtain an ultra-wide stopband about 54 GHz (10.18fc) with a suppressing level of -21 dB, two different suppressing cells are employed. The overall circuit size is 59.16 mm2, which indicates a small occupied area. To clarify the performance of each resonator and describe the location of the transition zeros, exact equations based on the equivalent LC circuits have been calculated.
Citation
Arash Abdipour Ashkan Abdipour , "Compact Microstrip Lowpass Filter with an Ultra-Wide Stopband and Sharp Transition Band Using T-Shaped and Polygon Resonators," Progress In Electromagnetics Research C, Vol. 74, 51-61, 2017.
doi:10.2528/PIERC16121904
http://www.jpier.org/PIERC/pier.php?paper=16121904
References

1. Wei, X. B., P. Wang, M. Q. Liu, and Y. Shi, "Compact wide-stopband lowpass filter using stepped impedance hairpin resonator with radial stubs," IEE Electron. Lett., Vol. 47, No. 15, 862-863, Jul. 2011.
doi:10.1049/el.2011.1414

2. Wei, F., L. Chen, X.-W. Shi, Q.-L. Huang, and X.-H. Wang, "Compact lowpass filter with wide stop-band using coupled-line hairpin unit," Electron. Lett., Vol. 46, No. 1, 88-90, 2010.
doi:10.1049/el.2010.2411

3. Ma, K. and K. S. Yeo, "New ultra-wide stopband low-pass filter using transformed radial stubs," IEEE Trans. Microw. Theory. Tech., Vol. 59, No. 3, 604-611, Mar. 2011.
doi:10.1109/TMTT.2010.2095031

4. Cui, H., J. Wang, and G. Zhang, "Design of microstrip lowpass filter with compact size and ultra-wide stopband," IEE Electron. Lett., Vol. 48, No. 14, 856-857, Jul. 2012.
doi:10.1049/el.2012.1097

5. Wang, J., H. Cui, and G. Zhang, "Design of compact microstrip lowpass filter with ultra-wide stopband," IEE Electron. Lett., Vol. 48, No. 14, 854-856, Jul. 2012.
doi:10.1049/el.2012.1362

6. Wang, J., L.-J. Xu, S. Zhao, Y.-X. Guo, and W. Wu, "Compact quasi-elliptic microstrip lowpass filter with wide stopband," IEE Electron. Lett., Vol. 46, No. 20, 1384-1385, 2010.
doi:10.1049/el.2010.1569

7. Luo, S., L. Zhu, and S. Sun, "Stopband-expanded low-pass filters using microstrip coupled-line hairpin units," IEEE Microw. Wireless Compon. Lett., Vol. 18, No. 8, 506-508, Aug. 2008.
doi:10.1109/LMWC.2008.2001004

8. Velidi, V. K. and S. Sanyal, "Sharp roll-off lowpass filter with wide stopband using stub-loaded coupled-line hairpin unit," IEEE Microw. Wireless Compon. Lett., Vol. 21, No. 6, 301-303, Jun. 2011.
doi:10.1109/LMWC.2011.2132120

9. Mandal, M. K., P. Mondal, S. Sanyal, and A. Chakrabarty, "Low insertion-loss, sharp rejection and compact microstrip lowpass filter," IEEE Microw. Wirel. Compon. Lett., Vol. 16, No. 11, 600-602, 2006.
doi:10.1109/LMWC.2006.884777

10. Gomez-Garcia, R., M. A. Sanchez-Soriano, M. Sanchez Renedo, G. Torregrosa-Penalva, and E. Bronchalo, "Extended-stopband microstrip lowpass filter using rat-race directional couplers," Electron. Lett., Vol. 49, No. 4, 272-274, 2013.
doi:10.1049/el.2012.4245

11. Abdipour, A., A. Abdipour, and S. Lotfi, "A lowpass filter with sharp roll-off and high relative stopband bandwidth using asymmetric high-low impedance patches," Radioengineering, Vol. 24, No. 3, 712-716, 2015.
doi:10.13164/re.2015.0712

12. Hong, J.-S. and M. J. Lancaster, Microstrip Filters for RF/Microwave Applications, John Wiley & Sons, Inc., 2001.
doi:10.1002/0471221619

13. Boutejdar, A., "Design of a very compact U-HI-LO low-pass filter using meander technique and quasi horn inductors for L-band and C-band applications," Microwave and Optical Technology Letters, Vol. 58, No. 12, 2897-2901, 2016.
doi:10.1002/mop.30173

14. Boutejdar, A., et al., "A simple transformation from lowpass to bandpass filter using a new quasi-arrow head defected ground structure resonator and gap-J-inverter," Microwave and Optical Technology Letters, Vol. 58, No. 4, 947-953, 2016.
doi:10.1002/mop.29705

15. Boutejdar, A., et al., "DGS resonators form compact filters," Microwaves and RF, Vol. 54, No. 3, 52-60, 2015.

16. Boutejdar, A., "Design of broad-stop band low pass filter using a novel quasi-Yagi-DGS-resonators and metal box-technique," Microwave and Optical Technology Letters, Vol. 56, No. 3, 523-528, 2015.
doi:10.1002/mop.28190