Reflection and transmission coefficients of rectangular dielectric waveguide discontinuity with an air gap

Author

Tomabechi, Yoshiro ; Matsumura, Kazuhito

Author_Institution

Fac. of Eng., Utsunomiya Univ., Japan

Volume

38

Issue

6

fYear

1990

fDate

6/1/1990 12:00:00 AM

Firstpage

797

Lastpage

799

Abstract

Reflection, transmission, and radiation characteristics of rectangular dielectric waveguide discontinuities with an air gap are analyzed. A transverse displacement with the air gap is also treated. The characteristics of this discontinuity have never been analyzed with a conventional slab model. In this analysis, a two-dimensional Fourier transformation and orthogonal relations between guided and radiation modes are utilized. Calculations and experimental results in X-band are compared, and good agreement is found. To discuss the numerical results, the principle of energy conservation is introduced. The discrepancy between the results and this principle is less than 0.0003

Keywords

Fourier transforms; dielectric waveguides; rectangular waveguides; waveguide theory; X-band; air gap; energy conservation; orthogonal relations; radiation characteristics; radiation modes; rectangular dielectric waveguide discontinuity; slab model; transverse displacement; two-dimensional Fourier transformation; Boundary conditions; Dielectric constant; Energy conservation; Equations; Integrated optics; Optical reflection; Optical waveguides; Rectangular waveguides; Slabs; Waveguide discontinuities;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.130980

Filename

130980