Dual-mode resonator filter with improved feed-lines for dual-band applications

Gao, Shan Shan; Li, Jia-Lin; Zhu, Zhe Lin; Xu, Jia Li; Zhao, Yong Xin

doi:10.2478/jee-2020-0060

Abstract

An improved feedline configuration for dual-mode resonator filter is investigated in this paper. Based on the introduced topology, a dual-mode dual-band bandpass filter with center frequencies of 1.8 and 2.4 GHz is optimally designed, fabricated and tested. The introduced dual-band bandpass filter has simple structure and enables high selectivity to be realized due to two pairs of transmission zeros located near to the lower and upper passband, respectively. Both measured and simulated performances are presented with good consistency.

References

[1] H. Miyake, S. Kitazawa, T. Ishizaki, T. Yamada, and Y. Nagatomi, “A miniaturized monolithic dual band filter using ceramic lamination technique for dual mode portable telephones”, 1997 IEEE MTT-S Int. microw. Symp. Dig, vol. 2, pp. 789-792, 1997.10.1109/MWSYM.1997.602908
Search in Google Scholar Back to article
[2] H. Zhang, W. Kang, and W. Wu, “Miniaturized dual-band SIW filters using E-shaped slotlines with controllable center frequencies”, IEEE Microw. Wirel. Comp. Lett, vol. 28, no. 4, pp. 311-313, 2018.10.1109/LMWC.2018.2811251
Search in Google Scholar Back to article
[3] V. Nocella, L. Pelliccia, C. Tomassoni, and R. Sorrentino, “Miniaturized dual-band waveguide filter using TM dielectric-loaded dual-mode cavities”, IEEE Microw. Wirel. Comp. Lett, vol. 26, no. 5, pp. 310-312, 2016.10.1109/LMWC.2016.2549181
Search in Google Scholar Back to article
[4] A. Lahmissi and M. Challal, “A novel microstrip dual-band bandpass filter with wide and deep stopband using modified SIRs”, 2017 5 th International Conference on Electrical Engineering-Boumerdes (ICEE-B, pp. 1-4, 2017.10.1109/ICEE-B.2017.8192146
Search in Google Scholar Back to article
[5] D. Wang, Z. He, and H. Yang, “Compact dual-band filter based on quarter-wavelength SIRs with grounded via coupling”, 2019 IEEE Asia-Pacific Microwave Conference (APMC, pp. 774-776, 2019.10.1109/APMC46564.2019.9038190
Search in Google Scholar Back to article
[6] X. Luo, X. Cheng, J. Han, L. Zhang, F. Chen, Y. Guo, X. Xia, and X. Deng, “Compact dual-band bandpass filter using defected SRR and irregular SIR”, Electron. Lett, vol. 55, no. 8, pp. 463-465, 2019.10.1049/el.2018.8032
Search in Google Scholar Back to article
[7] P. Ma, B. Wei, J. Hong, X. Guo, B. Cao, and L. Jiang, “Coupling matrix compression technique for high-isolation dual-mode dual-band filters”, IEEE Trans. Microw. Theory Tech, vol. 66, no. 6, June 2006, pp. 2814-2821, 2018.10.1109/TMTT.2018.2815684
Search in Google Scholar Back to article

Dual-mode resonator filter with improved feed-lines for dual-band applications

Abstract

Paradigm

My account