This paper presents the applicability of cavity modeling technique to analyze field propagation inside a multiport waveguide network. For a better understanding of the subject, we have considered a five-port quadraplexer as our target network. Field propagations within the network at different passband and stopband frequencies have been presented. The analysis has been verified by comparing the overall frequency response of the network with the available data in literature. The analysis demonstrates the field division at different junctions as well as field attenuation/propagation at different points of the network, which will be helpful for designing more complex and/or advanced multiport waveguide networks. It also demonstrates the presence of higher order modes at different discontinuities of the network and their effectson the respective field distributions.
Ashmi Chakraborty Das,
"Analysis of Field Propagation through
a Multiport Frequency Selective Network Using Cavity Modeling Technique," Progress In Electromagnetics Research C,
Vol. 82, 209-223, 2018. doi:10.2528/PIERC18010802
1. Das, S. and A. Chakraborty, "A novel modeling technique to solve a class of rectangular waveguide based circuits and radiators," Progress In Electromagnetic Research, Vol. 61, 231-252, May 2006. doi:10.2528/PIER06010302
2. Das, S., A. Chakraborty, and A. Chakraborty, "Characteristics of an offset longitudinal/transverse slot coupled crossed waveguide junction using multiple cavity modeling technique considering the TE00 mode at the slot aperture," Progress In Electromagnetic Research, Vol. 67, 297-316, January 2007. doi:10.2528/PIER06092701
3. Das, S. and A. Chakraborty, "Applicability of multiple cavity modeling technique on electrically large structures," Journal of Electromagnetic Waves and Application, Vol. 22, No. 4, 483-492, 2008. doi:10.1163/156939308784150245
4. Panda, D. K. and A. Chakraborty, "Multiple cavity modeling of a feed network for two dimensional phased array application," Progress In Electromagnetic Research Letters, Vol. 2, 135-140, 2008. doi:10.2528/PIERL07122504
5. Panda, D. K., A. Chakraborty, and S. R. Choudhury, "Analysis of co-channel interference at waveguide joint using multiple cavity modelling technique," Progress In Electromagnetic Research Letters, Vol. 4, 91-98, 2008. doi:10.2528/PIERL08042704
6. Gayen, R. K. and S. Das, "A high-gain broad-band waveguide longitudinal slot array antenna," Progress In Electromagnetic Research C, Vol. 44, 239-249, 2013. doi:10.2528/PIERC13090604
7. Vengadarajan, A., "Multiple cavity modeling technique for solving aperture coupled waveguide junctions,", Ph.D. Dissertation, Department of Electronics & Electrical Communication Engineering, Indian Institute of Technology, Kharagpur, India, 1999.
8. Shang, X., Y. Wang, W. Xia, and M. J. Lancaster, "Novel multiplexer topologies based on all-resonator structure," IEEE Transactions on Microwave Theory and Techniques, Vol. 61, No. 11, 3838-3844, November 2013. doi:10.1109/TMTT.2013.2284496
9. Harrington, R. F., Time-Harmonic Electromagnetic Fields, McGraw-Hill Book Company, New York, 1961.