Asymmetrical Coupled Coplanar-Type Transmission Lines with Anisotropic Substrates.
Abstract
Various types of transmission lines with anisotropic substrates have been investigated for use in microwave- and millimeter-wave integrated circuits. These include single and coupled striplines, slot lines, and coplanar-type transmission lines. The coplanar-type transmission lines (CTLs) are promising because of their easy adaptation to shunt element connections. The application of coupled coplanar-type transmission lines. (C-CTL) have been studied based on the quasistatic and hybrid-mode formulations and accurate numerical values are available for the cases with isotropic and/or anisotropic substrates. However, most of them assume the structural symmetry. The theoretical approach for the asymmetrical version is available only for the propagation constant of the case with a single isotropic substrate. This paper presents the analytical method for the general structure of asymmetrical coupled coplanar-type transmission lines with an anisotropic substrate. This method includes both the hybrid-mode and the quasistatic formulations and is useful for accurately computing the characteristics impedances as well as propagation constants of various types of asymmetrical coupled coplanar-type transmission lines.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1986
- Accession Number
- ADA165007
Entities
People
- Raj Mittra
- Toshihide Kitazawa
- Yoshio Hayashi
Organizations
- University of Illinois Urbana–Champaign