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THEORY OF COUPLED WAVEGUIDES
Author(s) -
Huang Hung-Chia
Publication year - 1962
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.18.27
Subject(s) - point (geometry) , waveguide , boundary value problem , mathematical theory , computer science , diffraction , electromagnetic theory , transmission (telecommunications) , electromagnetic radiation , physics , set (abstract data type) , boundary (topology) , theoretical physics , optics , mathematical analysis , telecommunications , mathematics , quantum mechanics , geometry , programming language
In this paper, the author endeavors to study the diffraction of electromagnetic wave by a long slot with conducting environment on opposite sides (i.e., a slot-coupled system of arbitrary shapes) from the viewpoint of coupled waves. A novel theory, which is justified by clear physical reasoning, is presented for a practical solution of the relevant boundary-value problem. In the light of this theory, problems of coupled waveguides, like problems of a single waveguide structure, are attacked by the same mathematical approach, namely, the theories of development in the orthogonal functions. Thus, two types of problems heretofore treated diferently are brought under a unified and coherent point of view. To illustrate the applicability of the present theory, the author solves the problem of a long slot directional coupler, whose usefulness in the development of long-distance waveguide transmission is well-known, and derives a set of original formulas for computing the coupler parameters. As concluding remarks, some further appliations of the theory are freely discussed.

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