Development of Diplexers Based on Dual-Mode Substrate Integrated Waveguide Cavities
Keywords:
Diplexer, dual-mode cavity, filter, Substrate Integrated Waveguide (SIW)Abstract
Diplexers based on dual-mode Substrate Integrated Waveguide (SIW) cavities are proposed and implemented. The dual-mode cavities not only act as a resonator for both Rx and Tx channels, but also as the interconnect between these two channels which help to realize the isolation. The dual-mode cavities resonating at TE201 and TE103 modes in our design show several advantages than those dual-mode cavities operating at TE201 and TE301 modes. Single-mode cavities are cascaded with the dual-mode cavity to realize the two-order filters for Rx and Tx channels. Two design examples are presented with a normal printed circuit board process and verified by experiments.
Downloads
References
T. Yang, P. L. Chi, and T. Itoh, “High isolation and compact diplexer using the hybrid resonators,” IEEE Microw. Wireless Compon. Lett., vol. 20, no. 10, pp. 551-553, October 2010.
F. Cheng, X. Q. Lin, Z. B. Zhu, L. Y. Wang, and Y. Fan, “High isolation diplexer using quarterwavelength resonator filter,” Electron. Lett., vol. 48, no. 6, pp. 330-331, March 2012.
F. M. Vanin, D. Schmitt, and R. Levy, “Dimensional synthesis for wide-band waveguide filters and diplexers,” IEEE Trans. Microw. Theory Tech., vol. 52, no. 11, pp. 2488-2495, November 2004.
H. W. Deng, Y. J. Zhao, F. Fu, X. J. Zhou, and Y. Y. Liu, “Compact and high isolation microstrip diplexer for GPS and UWB application,” Electron. Lett., vol. 49, no. 10, pp. 659-661, May 2013.
H. J. Tang, W. Hong, J. X. Chen, G. Q. Luo, and K. Wu, “Development of millimeter wave planar diplexers based on complementary characters of dual-mode substrate integrated waveguide filters with circular and elliptic cavities,” IEEE Trans. Microw. Theory Tech., vol. 55, no. 4, pp. 776-782, April 2007.
J. H. Lee, N. Kidera, G. Dejean, S. Pinel, J. Laskar, and M. M. Tentzeris, “A V-band front-end with 3-D integrated cavity filters/duplexers and antennas in LTCC technologies,” IEEE Trans. Microw. Theory Tech., vol. 54, no. 7, pp. 2925-2936, July 2006.
H. Chu, Y. X. Guo, Y. L. Song, and Z. L. Wang, “40/50 GHz diplexer design in LTCC technology,” Electron. Lett., vol. 47, no. 4, pp. 260-262, February 2011.
J. S. Hong and M. J. Lancaster, “Microstrip filters for RF/microwave applications,” New York: Wiley, 2001.
H. Chu, L. Bian, and J. X. Chen, “A novel 3D cavity diplexer with compact size using LTCC technologies for V-band wireless communication systems,” To Be Published In Int. J. RF Microwave Comput. Aided Eng
