Transmission of horizontally polarized waves and trapped waveguide modes in inhomogeneous media
Abstract
A generalized WKB approach is used to obtain full wave solutions for horizontally polarized waves in inhomogeneous media with critical coupling regions where the permittivity gradient may approach zero. Reflection and transmission coefficients and the characteristic surface impedance for ionized and nonionized media are computed as functions of the lateral wavenumber. Excitation of propagating and evanescent waves is considered and the results are shown to satisfy the realizability and reciprocity relationships in electromagnetic theory.
- Publication:
-
IEEE Transactions on Antennas and Propagation
- Pub Date:
- November 1977
- DOI:
- 10.1109/TAP.1977.1141691
- Bibcode:
- 1977ITAP...25..807B
- Keywords:
-
- Electrical Impedance;
- Electromagnetic Wave Transmission;
- Polarized Electromagnetic Radiation;
- Wentzel-Kramer-Brillouin Method;
- Dielectrics;
- Inhomogeneity;
- Permittivity;
- Propagation Modes;
- Reflectance;
- Waveguides;
- Communications and Radar