Tracing antenna factors of precision dipoles to basic quantities

• Published in: IEEE transactions on electromagnetic compatibility Vol. 40; no. 4; pp. 297 - 310
• Main Authors: Garn, H., Buchmayr, M., Mullner, W.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.11.1998; Institute of Electrical and Electronics Engineers
• Subjects: Antenna measurements; Applied sciences; Dipole antennas; Dynamic range; Electromagnetic compatibility; Electromagnetic measurements; Exact sciences and technology; Frequency; Information, signal and communications theory; Loss measurement; Measurement standards; Measurement uncertainty; Propagation losses; Telecommunications and information theory; Testing; Network analyzer; Electric field; s parameter; Electromagnetic code; Experimental method; Electromagnetic compatibility; Standard deviation; Calibration; Electric dipole; Transmission loss; Anechoic room; Antenna
• ISSN: 0018-9375; 1558-187X
• DOI: 10.1109/15.736215

An experimental method is described to trace scalar S/sub 21/-measurements with a precision network analyzer to the basic quantities frequency and power. The achieved measurement uncertainty is 0.11 dB for two standard deviations (95.5% confidence level) at a dynamic range up to 70 dB. Precision reference dipoles have been constructed for use as electric field-strength standards in the frequency range of 30-1000 MHz. The transmission loss between such pairs was calculated by using the numerical electromagnetics code and measured both on an open-area test site and in a fully anechoic chamber. Deviations between computations and measurement of the transmission loss were less than 0.3 dB for any measurement and less than 0.25 dB for the mean values. The expanded uncertainty in the antenna factor of one precision dipole is 0.15 dB for two standard deviations.