Wideband Filtering Crossover Based on Ring Resonator with Sharp Rejection
关键词:
Coupled lines, even/odd-mode, filtering crossover, transmission zero, wideband摘要
A wideband filtering crossover based on ring resonators with sharp rejection is proposed in this paper. Four transmission zeros near the crossover passband can be adjusted conveniently by the even/odd-mode characteristic impedance of the coupled lines. A high selectivity wideband filtering crossover located at 3.0 GHz is designed and fabricated for verification. Good filtering performance and high selectivity for the crossover are realized and experimentally verified.
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参考
T. Becks and I. Wolff, “Analysis of 3-D metallization structures by a full-wave spectral domain technique,” IEEE Trans. Microw. Theory Techn., vol. 40, no. 12, pp. 2219-2227, Dec. 1992.
W. Feng, T. Zhang, W. Che, and Q. Xue, “Compact single/dual-band planar crossovers based on coupled lines loaded with open stubs,” IEEE Trans. Compon. Packag. Manuf. Technol., vol. 60, no. 6, pp. 854- 862, June 2016.
Y. C. Chiou, J. T. Kuo, and H. R. Lee, “Design of compact symmetric four-port crossover junction,” IEEE Microw. Wireless Compon. Lett., vol. 19, no. 9, pp. 545-547, Sep. 2009.
J. J. Yao, C. Lee, and S. P. Yeo, “Microstrip branch-line couplers for crossover application,” IEEE Trans. Microw. Theory Techn., vol. 59, no. 1, pp. 87-92, Jan. 2011.
Y. L. Wu, L. X. Jiao, Z. Zhuang, and Y. Liu, “The art of power dividing: a review for state-of-the-art planar power dividers,” China Communications, vol. 14, no. 5, pp. 1-16, May 2017.
H. Zhu, Y. Wang, and A. M. Abbosh, “Broadband microwave crossover using parallel coupled microstrip lines and short-ended stubs,” IET Microw. Antennas Propag., vol. 9, no. 1, pp. 79-85, Feb. 2014.
W. J. Feng, W. Q. Che, and Q. Xue, “Balanced filters with wideband common mode suppression using dual-mode ring resonators,” IEEE Trans. Circuits Syst. I: Regular Papers, vol. 62, no. 6, pp. 1499-1507, June 2015.
X. Y. Zhang, Q. Y. Guo, K. X. Wang, B. J. Hu, and H. L. Zhang, “Compact filtering crossover using stub-loaded ring resonator,” IEEE Microw. Wireless Compon. Lett., vol. 24, no. 5, pp. 327-329, May 2014.
C. Zhao, W. Feng, and W. Che, “Ultra-wideband balanced bandpass filters based on transversal signal-interference concepts,” The Applied Computational Electromagnetics Society Journal, vol. 30, no. 10, pp. 1232-1237, Oct. 2016.
X. Gao, W. Feng, and W. Che, “LTCC wideband bandpass filter based on multi-layered coupling,” The Applied Computational Electromagnetics Society Journal, vol. 32, no. 2, pp. 158-162, Feb. 2017
G. Matthaei, L. Young, and E. M. T. Jones, Microwave Filters, Impedance Matching Networks and Coupling Structures. Artech House Inc., Norwood, MA, Section 5, pp. 222-224, 1985.
