The Application of Deterministic Spectral Domain Method to the Analysis of Planar Circuit Discontinuities on Open Substrates
Abstract
A deterministic formulation of the method of moments carried out in the spectral domain is extended to include the effects of two-dimensional, two- component current flow in planar transmission line discontinuities on open substrates. The method includes the effects of space-wave and surface-wave and surface-wave radiation through the use of the exact spectral domain Green's function. The procedure and formulation of the method are described in detail. Also, techniques used to increase the numerical efficiency are described in detail. The method is used to determine accurate circuit models of three types of planar circuit discontinuities on open substrates: microstrip open-end discontinuities, slotline short-circuit discontinuities, and microstrip gap discontinuities. The analysis is then applied to gap-coupled resonators. The coupling between cascaded gap discontinuities is shown to be significant when the substrate is electrically thick since surface wave excitation is strong. Possibilities for further applications of the method to more complicated discontinuities are discussed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1990
- Accession Number
- ADA226901
Entities
People
- James Mclean
- Tatsuo Itoh
Organizations
- University of Texas at Austin