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A multistrip moment method technique and its application to the post problem in a circular waveguide

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3 Author(s)
Xiao-Hui Zhu ; Beijing Inst. of Radio Meas., China ; Dai-Zong Chen ; Shi-Jin Wang

A moment method technique for solving obstacle problems in a waveguide is presented. Instead of using a multifilament current representation, which leads to a slowly converging series, a multistrip representation of the current is proposed. In the procedure, the matrix elements are determined by a series involving integrals of mode functions over the strips and the convergence is improved. The true currents on obstacle surfaces are replaced by equivalent planar currents in a number of waveguide cross sections inside the obstacle. The technique is applied to a pair of metallic posts in the TE11-mode circular waveguide. Numerical results are compared with experimental data

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:39 ,  Issue: 10 )