DocumentCode
1987769
Title
Evaluation and Improvement of the Accuracy of TEM Transmission Cells with Internal Field Measurements
Author
Jokela, K. ; Puranen, L.
Author_Institution
Institute of Radiation Protection, P O Box 268, SF-00101 HELSINKI 10, FINLAND
fYear
1983
fDate
3-8 Sept. 1983
Firstpage
652
Lastpage
657
Abstract
Two square TEM transmission cells with side heights 30 cm and 50 cm were designed for the calibration of RF-hazard monitors. The error due to reflections was reduced from ±10 % to ±2 % (input VSWR < 1.2) by lengthening straight sections and measuring the longitudinal E-field patterns at calibration frequencies. Comparison measurements with small probes showed that the maximum difference between the cells was 7 % except some sharp resonance points caused by TEM harmonics and TE01 mode. The vertical field non-uniformity was also examined.
Keywords
Antenna measurements; Calibration; Electrical resistance measurement; Frequency response; Magnetic field measurement; Magnetic resonance; Probes; Reflection; Spectral analysis; TEM cells;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference, 1983. 13th European
Conference_Location
Nurnberg, Germany
Type
conf
DOI
10.1109/EUMA.1983.333312
Filename
4131965
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