volume | PIER Journals

Abstract

This paper presents a systematic design process to design Bandstop Filters from Single-Band (SB-BSF) to Hexa-Band (HB-BSF). The presented BSFs are useful to suppressing the unwanted signal frequencies from 1.98 GHz to 7.75 GHz. Single-Band BSF suppress the frequency 1.98 GHz; Dual-Band BSF suppress 2 GHz and 3.4 GHz (WiMax Band); Triple-Band BSF suppress 2.0 GHz, 3.4 GHz, and 4.75 GHz; Quad-Band BSF suppress 2.0 GHz, 3.4 GHz, 4.75 GHz, and 6.4 GHz; Penta-Band suppress 2.0 GHz, 3.4 GHz, 4.0 GHz, 4.85 GHz, and 6.75 GHz; however Hexa-Band suppress 2.0 GHz, 3.4 GHz, 4.2 GHz, 4.75 GHz, 6.5 GHz, and 7.75 GHz. The attenuation level for the suppressed frequencies varies from 19 dB to 62 dB, and the quality factor varies from 17 to 384.5. The simulated and measured results are presented to validate the design process. Such compact BSFs could be useful in modern communication systems to stop the potential interference of the unwanted signal frequencies in WLAN and UWB bands.

1. La, D.-S., W.-H. Han, and J.-L. Zhang, "Compact band-stop filters using π-Shape DGS and π- shape DMS," Microwave and Optical Technology Letters, Vol. 56, No. 11, 2504-2507, November, 2014.
doi:10.1002/mop.28625 Google Scholar

2. Wang, J., H. Ning, L. Mao, and M. Li, "Miniaturized dual-band bandstop filter using defected microstrip structure and defected ground structure," 2012 IEEE MTT-S International Microwave Symposium Digest (MTT), 1-3, Montreal, QC, Canada, 2012. Google Scholar

3. Uchinda, H., H. Kamino, K. Totani, N. Yoneda, M. Miyazaki, Y. Konishi, S. Makino, J. Hirokawa, and M. Ando, "Dual-band-rejection filter for distortion reduction in RF transmitters," IEEE Trans. Mirow. Theory Tech., Vol. 52, No. 11, 2550-2556, November 2004.
doi:10.1109/TMTT.2004.837161 Google Scholar

4. Chin, K. S., J. H. Yeh, and S. H. Chao, "Compact dual-band bandstop filters using steppedimpedance resonators," IEEE Microw. Wireless Component Lett., Vol. 17, No. 12, 849-851, December 2007.
doi:10.1109/LMWC.2007.910481 Google Scholar

5. Chiou, H. K. and C. F. Tai, "Dual-band microstrip bandstop filter using dual-mode loop resonator," Electronic Lett., Vol. 45, No. 10, 507-509, May 2009.
doi:10.1049/el.2009.0235 Google Scholar

6. Verma, A. K., A. Abdel-Rahman, A. Kumar, A. Balalem, and A. Omar, "New compact dual-band bandstop filter," International Journal of Electronics, Taylor & Francis, Vol. 100, No. 4, 497-507, 2013.
doi:10.1080/00207217.2012.713020 Google Scholar

7. Liao, S.-S., S.-Y. Yuan, Y.-L. Wu, and T.-Y. Huang, "Compact microstrip bandstop filter with controllable triple stopband response," PIRS Proceedings, 1377-1380, Kula Lumper, Malaysia, March 27–30, 2012. Google Scholar

8. Xiao, J.-K. and Y.-F. Zhu, "Multiband bandstop filter using inner T-shaped defected microstrip structure (DMS)," International Journal of Electronics and Communication (AEU), Vol. 68, 90-96, 2014.
doi:10.1016/j.aeue.2013.07.002 Google Scholar

9. Chiu, L. and Q. Xue, "A simple microstrip bandstop filter using cross-coupling stubs," International Journal of Microwave Science and Technology, Article ID 473030, 2012. Google Scholar

10. Xiao, J. K. and H. F. Huang, "Square patch resonator banstop filter," 12th IEEE International Conference on Communication Technology (ICCT), 104-107, November 11–14, 2010. Google Scholar

11. Ning, H., J. Wang, Q. Xiong, and L.-F. Mao, "Design of planar dual and triple narrow-band bandstop filters with independently controlled stopbands and improved spurious response," Progress In Electromagnetics Research, Vol. 131, 259-274, 2012.
doi:10.2528/PIER12072109 Google Scholar

12. Xiao, J.-K. and Y.-F. Zhu, "New U-shaped DGS bandstop filters," Progress In Electromagnetics Research C, Vol. 25, 179-191, 2013. Google Scholar

13. Jankovic, N., R. Geschke, and V. C. Bengin, "Compact tri-bnad bandpass and bandstop filters based on Hilbert-Fork resonators," IEEE Microwave and Wireless Components Letters, Vol. 23, No. 6, June 2013.
doi:10.1109/LMWC.2013.2258005 Google Scholar

14. Dhakal, R. and N. Y. Kim, "A compact systematic microstrip filter based on a rectangular meandered line stepped impedance resonator with a triple band bandstop response," The Scientific World Journal, Vol. 2013, article ID 457693, 2013. Google Scholar

15. Ning, H., J.Wang, Q. Xiong, H. Liu, and L.Mao, "A compact quad-band bandstop filter using dualplane defected structures and open-loop resonators," IEICE Electronics Express, Vol. 9, No. 21, 1630-1636, 2012.
doi:10.1587/elex.9.1630 Google Scholar

16. Adhikari, K. K. and N. Y. Kim, "A miniaturized quad-band bandstop filter with high selectivity based on shunt-connected, T-shaped stub-loaded, stepped-impedance resonators," Microwave and Optical Technology Letters, Vol. 57, No. 5, 1129-1132, May 2015.
doi:10.1002/mop.29046 Google Scholar

17. Karpuz, C., A. Gorur, A. K. Gorur, and A. Ozek, "A novel compact quad-band microstrip bandstop filter design using open-circuited stubs," IEEE MTT-S International Microwave Symposium Digest (IMS), 1-3, Seattle, WA, 2013. Google Scholar

18. Gupta, K. C., R. Garg, I. Bahl, and P. Bhartia, Microstrip Lines and Slotlines, 2 Ed., Artech House, Norwood, 1996.

19., FCC DA 13-1193, May 2013.

20., Ansoft HFSS ver. 11.

Dr. Ashwani Kumar

Dr. Anand Kumar Verma

Prof. Qingfeng Zhang

Dr. Parmod Kumar

Dr. Praduman Prasad Singh

Dr. Rajendar Prashad Rishishwar

Dr. Abhishek Singh

Dr. Ankita Bansal

Dr. Ritu