年間 4 号発行
ISSN 印刷: 2152-274X
ISSN オンライン: 2152-2758
MODE BASIS DERIVATION BY USING INTEGRAL EQUATION TECHNIQUE FOR A CIRCULAR DIELECTRIC WAVEGUIDE
要約
A new approach based on the integral equation technique is proposed for the mode basis derivation of a circular dielectric waveguide in free space. The mode functions and the normalizing functions have been evaluated analytically. The frequency-domain mode expansion in this basis is shown rapidly convergent. The field progress in longitudinal direction and time is described by the system of evolutionary integro-differential equations for the field expansion coefficients. Using the method of moments has shown the capacity of this system reduction to the system of differential matrix equations whose harmonic solution yields dispersion curves of a circular dielectric waveguide. The method is verified by a good agreement between the obtained dispersion curves and the values from known frequency domain solutions.
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Yu Butrym A., Mode expansions in time domain, 2012 6th International Conference on Ultrawideband and Ultrashort Impulse Signals, 2012. Crossref