Ultra-wideband characterization of lossy materials: short-pulse microwave measurements

David Kralj, Lawrence Carin

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

4 Scopus citations


Planar antennas are switched photoconductively to generate picosecond bursts of freely-propagating radiation with usable spectral amplitudes in the 5 to 85 GHz frequency range. This radiation is used to measure the frequency-dependent, complex index of refraction of dispersive materials in reflection and transmission; new deconvolution techniques are also demonstrated for extracting frequency-domain information from time-domain measurements. Experimental results are presented for the particular case of water, and a discussion is included on the relative merits of reflection and transmission time-domain measurements on materials.
Original languageEnglish (US)
Title of host publicationIEEE MTT-S International Microwave Symposium Digest
PublisherPubl by IEEEPiscataway, NJ, United States
Number of pages4
ISBN (Print)0780312090
StatePublished - Jan 1 1993
Externally publishedYes


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