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A mode-matching technique for the study of circular and coaxial waveguide discontinuities based on closed-form coupling integrals

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3 Author(s)
Orfanidis, A.P. ; Dept. of Electr. & Comput. Eng., Demokritos Univ. of Thrace, Xanthi, Greece ; Kyriacou, G.A. ; Sahalos, J.N.

A mode-matching scheme for the analysis of concentric circular and/or coaxial waveguide step discontinuities is proposed in this paper. An analytical evaluation of the involved coupling integrals for all possible discontinuities formed by any combination of a circular and a coaxial waveguide is performed. The originality mainly concerns the multimode excitation and scattering at a circular-to-coaxial waveguide step junction. Numerical results for a number of applications are compared against those of other techniques and/or measurements and are found to be in good agreement

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:48 ,  Issue: 5 )