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EMI Dipole Antenna Factors
Akira SUGIURA Takao MORIKAWA Teruo TEJIMA Hiroshi MASUZAWA
IEICE TRANSACTIONS on Communications
Publication Date: 1995/02/25
Print ISSN: 0916-8516
Type of Manuscript: INVITED PAPER (Special Issue on Electromagnetic Compatibility)
EMI, EM measurements, EMC, dipole antenna, antenna calibration,
Full Text: PDF(487.7KB)>>
Theoretical and experimental investigations of dipole antenna factors were carried out with special interest in their height patterns, since difference between them is a main cause of disagreement in EMI measurement results obtained with different antennas types. Antenna factors were expressed by matrix representation and their dependence on antenna dimensions and balun construction were numerically evaluated with the moment method. Those analyses revealed that antenna dimensions and balun characteristics have little effect on antenna factor height patterns. Slight influence was observed only at frequencies around 30MHz, when an antenna was placed less than 1.5m above a metal ground plane.