Characteristics of eigen waves of an open comb
Solution of a boundary problem for eigen waves of an open comb with combs of finite thickness is reduced to solving one of the two homogeneous systems of linear algebraic equations of the second kind. Advantages of one of them are determined. Optimal algorithm for calculating the power of eigen waves is found. To improve precision and to shorten the calculation time it is suggested to average power at the half of the comb’s thickness. Calculations of all main characteristics of eigen waves in the primary passband of the comb are given, including the generalized connection resistance having not to be mentioned in literature before. Calculation results for the group velocity are verified using two approaches: the dispersion curve and the ratio of the Pointing vector to energy density. All the calculated characteristics satisfy the known theorems.
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