Surface-Wave Losses of Coplanar Transmission Lines
- Creators
- Kasilingam, Dayalan P.
- Rutledge, David B.
Abstract
Coplanar transmission lines lose energy to surface waves when the propagation constant of the surface-wave mode exceeds that of the transmission line. This happens when the substrate thickness is an appreciable fraction of a wavelength. The losses should become important in integrated circuits at near-millimeter wavelengths because it is hard to make the substrate thickness small compared to a wavelength. In this paper we have developed a theory based on reciprocity for predicting these losses. We also utilized the quasi-static approximation method to derive expressions for propagation constants and line impedances. Experimental measurements were made for the surface-wave losses in the two strip line, the two slot line and the three wire line, and the results obtained were consistent with the theory.
Additional Information
© 1983 IEEE. Date of Current Version: 14 June 2010. This research was supported by Army Research Office.Attached Files
Published - KASims87.pdf
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Additional details
- Eprint ID
- 32102
- Resolver ID
- CaltechAUTHORS:20120626-130003437
- Army Research Office (ARO)
- Created
-
2012-06-26Created from EPrint's datestamp field
- Updated
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2022-11-01Created from EPrint's last_modified field