ELF vertical dipole antenna suspended from aircraft

Details ELF vertical dipole antenna suspended from aircraft ELF vertical dipole antenna suspended from aircraft

1976-03-17

1977-09-27

Lieberman, Eli

Communications: radio wave antennas

Antennas

Measuring signal energy

343706, 343750, 343899, H01Q 128, H01Q 918

Patent

active

040514790

ABSTRACT:
A vertical dipole antenna for the ELF (extremely low frequency) range. The antenna provides a series resonant circuit consisting of an inductor and the distributed capacitance of the conductor such as a wire which may be carried by lighter-than-air craft. The lighter-than-air craft may be conductive, in which case it contributes to the capacitance or the capacitance may be solely represented by the wire. The antenna may be frequency or phase modulated. In case of frequency modulation the frequency of the generator must be changed accordingly so that the series resonant circuit remains resonant at the frequency to be radiated. The antenna can be readily moved. A plurality of antennas may be provided to form a super-radiant array.

REFERENCES:
patent: 1296687 (1919-03-01), Nichols

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