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VLF/ELF input impedance of an arbitrarily oriented loop antenna in a cold collisionless multicomponent magnetoplasma.A study is made of the input impedance Z of a small strip-loop antenna with arbitrary orientation in a cold collisionless uniform multicomponent magnetoplasma. Assuming a uniform current distribution, an integral expression for Z is derived which is valid for arbitrary values of driving frequency, plasma composition and density, loop orientation angle, and static magnetic field strength. The integral expression is evaluated numerically for the VLF/ELF range in a plasma modeled upon the inner magnetosphere. Approximate closed-form expressions for Z are also developed. It is found that the loop VLF/ELF input reactance is essentially identical to its free space self inductance. Also the loop radiation resistance is found to be a strong function of the loop orientation angle for frequencies near the lower-hybrid-resonance frequency or below the proton gyrofrequency.
Document ID
19720044876
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Wang, T. N. C.
(Stanford Research Institute Menlo Park, Calif., United States)
Bell, T. F.
(Stanford University Stanford, Calif., United States)
Date Acquired
August 6, 2013
Publication Date
May 1, 1972
Publication Information
Publication: IEEE Transactions on Antennas and Propagation
Volume: AP-20
Subject Category
Physics, Plasma
Accession Number
72A28542
Funding Number(s)
CONTRACT_GRANT: NGL-05-020-008
Distribution Limits
Public
Copyright
Other

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