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Antenna vector impedance measurement by the EXOS‐D (Akebono) very low frequency plasma wave instrument (VLF)
Author(s) -
Hashimoto Kozo,
Nagano Isamu,
Okada Toshimi,
Yamamoto Masayuki,
Kimura Iwane
Publication year - 1991
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/91gl00035
Subject(s) - electrical impedance , very low frequency , resistive touchscreen , antenna (radio) , physics , plasma , capacitance , geophysics , low frequency , acoustics , electrical engineering , electrode , engineering , quantum mechanics , astronomy
Antenna impedance has been measured on board the EXOS‐D (Akebono) satellite by imposing a constant current at VLF. The impedance is obtained in a complex form, i.e., as a resistance and a capacitance. This is essential to obtain the absolute electric field intensities of tbe VLF waves. A critical frequency below which the resistive part becomes important is also obtained.

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