Microwave Characterization of Microshield Lines

Rhonda F. Drayton, Linda P.B. Katehi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations


An experimental characterization of a new type of monolithic planar transmission line, the microshield, is presented. Theoretically, it is shown to have the tendency to radiate less than the conventional coplanar waveguide (CPW). To characterize the line, experimental measurement of a scattering parameters of the microwave model is essential. This paper presents characterization through the design, fabrication and measurement of the line and a discontinuity such as the two coupled open-end line. The frequency dependence of the effective dielectric constant is measured and compared to the computed values. Although proposed for applications at lower sub-mm-wave frequencies, fabrication in a hybrid fashion allows for use at microwave frequencies. Present applications of microshield technology are seen in Microtech Cascade probes and feed throughs for package connections in CPW interconnects. In addition, it is possible to use the microshield to connect MMIC's by designing the shield width to accommodate an MMIC. Therefore characterization of the microshield line and discontinuities is necessary.

Original languageEnglish (US)
Title of host publication40th ARFTG Conference Digest - Fall 1992
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages6
ISBN (Electronic)0780356861, 9780780356863
StatePublished - 1992
Externally publishedYes
Event40th ARFTG Conference Digest - Fall 1992 - Orlando, United States
Duration: Dec 3 1992Dec 4 1992

Publication series

Name40th ARFTG Conference Digest - Fall 1992


Conference40th ARFTG Conference Digest - Fall 1992
Country/TerritoryUnited States

Bibliographical note

Funding Information:
The authors thank Prof. Gabriel Rebeiz and Mr. George Ponchak for their scientific support. This work has been supported by the Office of Navel Research (Contract No. 029226) and the NASA Center for Space Terahertz Technology.

Publisher Copyright:
© 1992 IEEE.


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