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Author Tofighi, M.-R. ♦ Daryoush, A.
Sponsorship IEEE Instrumentation and Measurement Society ♦ IEEE Instrumentation and Measurement Society ♦ Bureau international des poids et mesures ♦ IEEE ♦ International Bureau of Weights and Measures (BIPM) ♦ URSI ♦ NBS ♦ Agency Ind. Sci. & Technol., Min. Int. Trade & Ind. ♦ Sci. Council Japan ♦ International Union of Pure and Applied Physics (IUPAP) ♦ Bureau international des poids et mesures ♦ NIST ♦ NRCC ♦ National Conference of Standards Laboratories (NCSL) ♦ Allen Osborne Associates ♦ Andeen-Hagerling, Inc. ♦ Ballantine Lab. Inc. ♦ Clarke-Hess Communications Research Corp. ♦ Fluke Corporation ♦ Guildline Instruments ♦ Hewlett-Packard Co. ♦ Julie Res. Lab. Inc. ♦ Keithley Instruments, Inc. ♦ Measurements International Ltd. Canada ♦ QuadTech Inc. ♦ Quantum Design Inc. ♦ Rotek Instrum. Corp. ♦ Tegam Inc. ♦ Tektronix Inc
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©1963
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics ♦ Electricity & electronics
Subject Keyword Permittivity measurement ♦ Biological tissues ♦ Calibration ♦ Loss measurement ♦ Error correction ♦ Insertion loss ♦ Coaxial components ♦ Frequency measurement ♦ Microstrip ♦ Testing
Abstract Two correction methods are discussed in this paper to remove residual errors due to the lack of repeatability of coaxial-to-microstrip launchers as part of the TRL calibration procedure. These methods are applied for accurate insertion loss measurement of biological tissues embedded in a two-port microstrip test fixture, from which the tissues' complex permittivity values are extracted for frequencies between 15 and 50 GHz. In the first method, distilled water is used as a calibration standard as part of a two-port calibration procedure. The second method identifies an error transfer function using the difference between simulated and measured insertion loss for distilled water, and then applies it as a correction factor to the measurement results for biological tissues. Both methods are compared in terms of extracting the accurate complex permittivity of brain matter.
Description Author affiliation :: Dept. of Electr. & Comput. Eng., Drexel Univ., Philadelphia, PA, USA
ISSN 00189456
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2002-12-01
Publisher Place U.S.A.
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Volume Number 51
Issue Number 6
Size (in Bytes) 644.30 kB
Page Count 7
Starting Page 1170
Ending Page 1176

Source: IEEE Xplore Digital Library