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A Hybrid MM-FDFD Method for the Analysis of Waveguides With Multiple Discontinuities

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2 Author(s)
Gang Zheng ; State Key Lab. of Satellite Ocean Environ. Dynamics, Second Inst. of Oceanogr., Hangzhou, China ; Bing-Zhong Wang

By combining the mode matching (MM) technique and the finite-difference frequency-domain (FDFD) method, a hybrid method is proposed for computing frequency responses of waveguides with multiple discontinuities. In the method, the computational domain is divided into subdomains, and the final matrix equation is a Schur complement system. In the numerical examples, the method is compared to the classical finite-difference frequency-domain method and the partial eigenfunction expansion finite-difference frequency-domain method. The results show that this method is more efficient and accurate than the others.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:11 )