Title :
Calibration cell for E-field sensors in water environment
Author :
Berger, J. ; Pouhè, D. ; Mönich, G. ; Fahling, H. ; Wust, P. ; Petermann, K.
Author_Institution :
Dept. of Radio Freq. Eng., Tech. Univ. Berlin, Germany
fDate :
8/5/1999 12:00:00 AM
Abstract :
Compact and nonperturbing E-field sensors are used for antenna near field measurements. For application in the research area of hyperthermia these sensors are used in a water environment. Owing to the high dielectric constant of water in the frequency range from DC to ~1 GHz the sensitivity is changed. To perform a calibration of E-field sensors, a water-filled TEM-cell has been developed. The technique employs a transverse electromagnetic (TEM) transmission cell that operates as a 50 W impedance matched system. A uniform TEM-field is established inside the cell
Keywords :
antenna testing; calibration; electric field measurement; electric sensing devices; hyperthermia; 50 W; antenna near field measurement; calibration; electric field sensor; hyperthermia applicator; impedance matching; transverse electromagnetic transmission cell; water environment;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19990924
