Full-Wave Analysis of Isolated and Coupled Microwave Transmission Lines Using the Finite Element Method.
Abstract
This paper describes a finite element approach to a hybrid-mode analysis of isolated and coupled microwave transmission lines. Both the first and higher-order ordinary elements, as well as singular and infinite elements, are used to solve for the eigenvalues and eigenvectors of the modes propagating along the line. Once the field distribution in the cross section of the line is known the characteristic impedance of the dominant mode propagating along the line can readily be obtained. A perturbational approach is developed for estimating the losses due to conductor and dielectric dissipation and computing the attenuation constant for each mode. Lines treatable by this method may contain an arbitrary number arbitrarily shaped conductors, including a system of conductors either placed above a single ground plane or between two parallel ground planes, and inhomogeneous dielectric regions that can be approximated locally by a number of homogeneous subregions. The results obtained using the finite element procedure have been compared for various types of microwave transmission lines and have been found to agree well with available data. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1987
- Accession Number
- ADA178805
Entities
People
- Raj Mittra
- Zorica Pantic
Organizations
- University of Illinois Urbana–Champaign