Title :
Coupled mode analysis of a finline
Author :
Mazur, Jerzy ; Mrozowski, Michal
Author_Institution :
Telecommun. Inst., Tech. Univ. of Gdansk, Poland
fDate :
2/1/1989 12:00:00 AM
Abstract :
A theoretical analysis of a unilateral finline loaded with arbitrary inhomogeneous lossy dielectric material is presented. The rigorous coupled-mode approach is used. The electromagnetic field in the line is expressed in terms of the modes of a ridged waveguide, and the problem is transformed to a matrix eigenvalue equation. Approximate expressions are derived for investigating the properties of the fundamental mode in finlines loaded with dielectric slabs. Dispersion characteristics, the characteristic impedance, and the attenuation due to dielectric losses and the finite conductivity of the metal coating are computed for various line configurations. The numerical results are compared to data obtained by means of the spectral-domain method, proving the validity and usefulness of the proposed approach
Keywords :
dielectric-loaded waveguides; fin lines; waveguide theory; attenuation; characteristic impedance; dielectric slabs; electromagnetic field; finite conductivity; finline; fundamental mode; inhomogeneous lossy dielectric material; line configurations; matrix eigenvalue equation; ridged waveguide; rigorous coupled-mode approach; spectral-domain method; unilateral finline; Coupled mode analysis; Dielectric losses; Dielectric materials; Eigenvalues and eigenfunctions; Electromagnetic fields; Electromagnetic waveguides; Equations; Finline; Slabs; Transmission line matrix methods;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
