2022-07-19
Design of High-Selective Wideband Bandpass Filter with a Notched-Band and Harmonic Suppression
By
Progress In Electromagnetics Research Letters, Vol. 105, 57-62, 2022
Abstract
A high-selective wideband bandpass filter (BPF) with a notched-band and harmonic suppression is proposed in this paper. Firstly, a uniform impedance resonator with an embedded open-circuited stub square loop is applied in the filter design. By adopting parallel-coupling structure at I/O ports, such a resonator can generate a notched-band within the passband due to the counter-phase cancellation of two dissimilar signal paths. The width of the square loop can be adjusted to select the location of the notched-band. Secondly, by introducing an L-shaped open-circuited stub to one input feed line, a transmission zero (TZ) is created. It can be used to suppress higher harmonic passband. The filter is designed and fabricated with the notched-band centered at 8.1 GHz, and two TZs are implemented at the both sides of the passband. Simulated and measured results show that the filter has a good selectivity and a wider stopband characteristic.
Citation
Jie Liu, Yunxiu Wang, Guangyong Wei, Rui Lin Jia, and Yin Long Duan, "Design of High-Selective Wideband Bandpass Filter with a Notched-Band and Harmonic Suppression," Progress In Electromagnetics Research Letters, Vol. 105, 57-62, 2022.
doi:10.2528/PIERL22051001
References

1. Yang, G. M., R. Jin, J. Geng, X. Huang, and G. Xiao, "Ultra-wideband bandpass filter with hybrid quasi-lumped elements and defected ground structure," IET Microw. Antennas Propag., Vol. 1, No. 3, 733-736, 2007.
doi:10.1049/iet-map:20060288        Google Scholar

2. Basit, A., M. I. Khattak, and M. Al-Hasan, "Design and analysis of a microstrip planar UWB bandpass filter with triple notch bands for WiMAX, WLAN, and X-band satellite communication systems," Progress In Electromagnetics Research M, Vol. 93, 155-164, 2020.
doi:10.2528/PIERM20042602        Google Scholar

3. Zhu, L., S. Sun, and W. Menzel, "Ultra-wideband (UWB) bandpass filters using multiple-mode resonator," IEEE Microwave and Wireless Components Letters, Vol. 15, No. 11, 796-798, 2005.
doi:10.1109/LMWC.2005.859011        Google Scholar

4. Zhang, S. and L. Zhu, "Compact and high-selectivity microstrip bandpass filters using triple-/quad- mode stub-loaded resonators," IEEE Microwave and Wireless Components Letters, Vol. 21, No. 10, 522-524, 2011.
doi:10.1109/LMWC.2011.2166252        Google Scholar

5. Zhu, L., W. Menzel, and , "Compact microstrip bandpass filter with two transmission zeros using a stub-tapped half-wavelength line resonator," IEEE Microwave and Wireless Components Letters, Vol. 13, No. 1, 16-18, 2003.
doi:10.1109/LMWC.2007.911975        Google Scholar

6. Ghazali, A. N. and S. Pal, "A compact UWB filter with notched band and suppressed stopband using DGS," IETE Journal of Research, Vol. 59, No. 4, 420-423, 2013.
doi:10.4103/0377-2063.118065        Google Scholar

7. Sengupta, A., S. Roychoudhury, and S. Das, "Design of a miniaturized multilayer tunable super wideband BPF," Progress In Electromagnetics Research C, Vol. 99, 145-156, 2020.
doi:10.2528/PIERC19112805        Google Scholar

8. Chen, J. X., Y. L. Li, W. Qin, Y. J. Yang, and Z. H. Bao, "Compact multi-layer bandpass filter with wide stopband using selective feeding scheme," IEEE Trans. Circuits Syst. II, Vol. 65, 1009-1013, 2017.        Google Scholar

9. Aliqab, K. and J. Hong, "UWB balanced BPF using a low-cost LCP bonded multilayer PCB technology," IEEE Trans. Microw. Theory Tech., Vol. 67, No. 3, 1023-1029, 2019.
doi:10.1109/TMTT.2019.2892774        Google Scholar

10. Mouavi, O., A. R. Eskandari, M. M. R. Kashani, and M. A. Shameli, "Compact UWB bandpass filter with two notched bands using SISLR and DMS structure," Progress In Electromagnetics Research M, Vol. 80, 193-201, 2019.
doi:10.2528/PIERM19021303        Google Scholar

11. Liu, F. and M. Qun, "A new compact UWB bandpass filter with quad notched characteristics," Progress In Electromagnetics Research Letters, Vol. 88, 83-88, 2020.
doi:10.2528/PIERL19090505        Google Scholar

12. Yang, L., W. W. Choi, K. W. Tam, and L. Zhu, "Novel wideband bandpass filter with dual notched bands using stub-loaded resonators," IEEE Microwave and Wireless Components Letters, Vol. 27, 25-27, 2017.
doi:10.1109/LMWC.2016.2629967        Google Scholar

13. Guo, X., Y. Xu, and W. Wang, "Miniaturized planar ultra-wideband bandpass filter with notched band," Journal of Computer and Communications, Vol. 3, No. 3, 100-105, 2015.
doi:10.4236/jcc.2015.33017        Google Scholar

14. Wang, C.-H., Y.-S. Lin, and C. H. Chen, "Novel inductance-incorporated microstrip coupled-line bandpass filters with two attenuation poles," IEEE MTT-S Int. Microwave Symp. Dig., 1979-1982, 2004.        Google Scholar

15. Shbman, H. and J.-S. Hong, "Asymmetric parallel-coupled lines for notch implementation in UWB filters," IEEE Microwave and Wireless Components Letters, Vol. 17, No. 7, 516-518, 2007.
doi:10.1109/LMWC.2007.899314        Google Scholar