DocumentCode :
2501405
Title :
Low uncertainty broadband EMC measurement using calculable precision biconical antennas
Author :
Chen, Zhong ; Cook, Arthur
Author_Institution :
EMC Test Syst., Austin, TX, USA
Volume :
2
fYear :
2000
fDate :
2000
Firstpage :
505
Abstract :
It has been extensively studied and reported that uncertainties as low as 0.11 dB for antenna factor (AF) characterization can be achieved using FitzGerrell (1986) dipole antennas. Although it has been suggested to use these dipoles for swept frequency measurements, broadband biconical antennas have not been investigated and reported in literature in a similar manner. A pair of precision biconical antennas was constructed to investigate this possibility. The antennas were numerically simulated in the frequency range of 30-300 MHz above an infinite conducting ground plane and in free space. The numerical results were combined with the measured S-parameters of the baluns to give the theoretical site attenuation. It has been shown that the standard site method adopted by ANSI C63.4 can have systematic errors in normalized site attenuation larger than 4 dB using free-space biconical AFs from 30 to 300 MHz. The numerical approach described in this paper is shown to be capable of providing theoretical site attenuation values that are within a fraction of a dB of measured results
Keywords :
ANSI standards; S-parameters; UHF antennas; UHF measurement; antenna testing; attenuation measurement; conical antennas; electromagnetic compatibility; measurement errors; measurement standards; numerical analysis; ANSI C63.4; FitzGerrell dipole antennas; VHF; antenna factor; baluns; broadband biconical antennas; calculable precision biconical antennas; free space; frequency range; infinite conducting ground plane; low uncertainty broadband EMC measurement; measured S-parameters; measured results; normalized site attenuation; numerical results; numerical simulation; site attenuation measurement; standard site method; swept frequency measurements; systematic errors; theoretical site attenuation values; Antenna measurements; Attenuation measurement; Broadband antennas; Dipole antennas; Electromagnetic compatibility; Frequency measurement; Impedance matching; Measurement uncertainty; Numerical simulation; Scattering parameters;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electromagnetic Compatibility, 2000. IEEE International Symposium on
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-5677-2
Type :
conf
DOI :
10.1109/ISEMC.2000.874672
Filename :
874672
Link To Document :
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