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

Content Provider	IEEE Xplore Digital Library
Author	Kralj, D. Carin, L.
Copyright Year	1993
Description	Author affiliation: Dept. of Electr. Eng., Polytech. Univ., Brooklyn, NY, USA (Kralj, D.; Carin, L.)
Abstract	Planar antennas are switched photoconductively to generate picosecond bursts of freely propagating radiation with usable spectral amplitudes in the 5-to-86-GHz frequency range. This radiation is used to measure the frequency-dependent, complex index of refraction of dispersive materials in reflection and transmission. Novel 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 the relative merits of reflection and transmission time-domain measurements on materials are discussed. It is shown that the frequency-domain results from transmission measurements are generally of better accuracy than reflection measurements, although reflection measurements are required for thick lossy samples. Good results were obtained over a significantly wider bandwidth in transmission than were obtained in reflection.
Starting Page	1239
Ending Page	1242
File Size	422263
Page Count	4
File Format	PDF
ISBN	0780312090
ISSN	0149645X
DOI	10.1109/MWSYM.1993.277097
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1993-06-14
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Ultra wideband technology Microwave measurements Loss measurement Frequency measurement Reflection Thickness measurement Photoconducting materials Antenna measurements Time domain analysis Planar arrays
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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