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Oblique resonances excited in the near field of a satellite‐borne electric dipole antenna
Author(s) -
Koons H. C.,
PridmoreBrown D. C.,
McPherson D. A.
Publication year - 1974
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs009i005p00541
Subject(s) - physics , dipole , earth's magnetic field , electric field , antenna (radio) , oblique case , ionosphere , plasma , radiation pattern , dipole antenna , computational physics , magnetic field , optics , geophysics , telecommunications , linguistics , philosophy , quantum mechanics , computer science
Near‐field patterns of a short electric dipole antenna were measured in the magnetospheric plasma by an instrument aboard the polar orbiting satellite OV1‐20S. The most common antenna pattern observed at the fixed operating frequency, 300 kHz, was a dominantly biconic pattern with major axis parallel to the geomagnetic field. The measured cone angles are in reasonable agreement with those predicted by warm plasma theory. There was no discernible systematic asymmetry in these angles such as could be attributed to field‐aligned currents in the plasma or to the motion of the satellite through it.