Dielectric relaxation studies of biological tissues in the microwave frequency range

Author

Rufus, Elizabeth ; Alex, Zachariah C. ; Mathew, Lazar

Author_Institution

Sch. of Electr. Sci., Deemed Univ., Vellore, India

Volume

1

fYear

2005

fDate

4-7 Dec. 2005

Abstract

The complex dielectric constants at room temperature of various goat tissues (liver, muscle, kidney, heart and brain) were measured in the frequency range 1 to 10 GHz with the help of a HP network analyser HP 8510A. Open ended coaxial cable method was employed for the measurement. The system imperfections are completely avoided by calibrating the system with four known materials and their reflection coefficients were used in the calculation along with the reflection coefficient of the sample. The relaxation frequency in the δ region, spread of relaxation, volume fraction of protein present in tissues are calculated from the measured dielectric data.

Keywords

bioelectric phenomena; biological effects of microwaves; biological tissues; coaxial cables; dielectric relaxation; network analysers; permittivity measurement; proteins; 1 to 10 GHz; HP network analyser; biological tissues; dielectric constants; dielectric relaxation; goat tissues; microwave frequency range; open ended coaxial cable method; protein; reflection coefficients; volume fraction; Biological tissues; Dielectric constant; Dielectric measurements; Frequency measurement; Liver; Microwave frequencies; Muscles; Reflection; Temperature distribution; Volume relaxation;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings

Print_ISBN

0-7803-9433-X

Type

conf

DOI

10.1109/APMC.2005.1606235

Filename

1606235