Measurement of Antenna Factor of Dipole Antennas on a Ground Plane by 3-Antenna Method

Hitoshi IIDA  Shinobu ISHIGAMI  Ichiro YOKOSHIMA  Takashi IWASAKI  

IEICE TRANSACTIONS on Communications   Vol.E78-B    No.2    pp.260-267
Publication Date: 1995/02/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Electromagnetic Compatibility)
EMI measurement,  dipole antenna,  antenna factor,  3-antenna method,  near-field measurement,  ground plane,  

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The antenna factor measurement of the dipole antennas for electromagnetic interference (EMI) measurements is studied theoretically and experimentally. The 3-antenna method is applied to near-field. Near-field transmission characteristics between the transmitting and receiving dipole antennas is obtained by using the electromotive force (EMF) method, where sinusoidal current distributions are assumed. It is shown that the antenna factors can be measured from transmission values between two antennas and near-field correction factors at any height of each antenna.