Loop driven element antenna system and voltage feed system

Details Loop driven element antenna system and voltage feed system Loop driven element antenna system and voltage feed system

1978-10-10

1980-11-25

Moore, David K.

Communications: radio wave antennas

Antennas

High frequency type loops

343742, 343867, H01Q 1114

Patent

active

042361605

ABSTRACT:
A system particularly useful for feeding antennas employing one electrical wavelength closed loop driven elements. Single or dual wire transmission line sections provide impedance match between the high voltage, high impedance feed point on the loop and a low impedance antenna feed line. Selectable polarization with high isolation between feed lines is provided by the connection of a second transmission line section to a point located 90 electrical degrees away on the loop, at the current maximum when the other feed point is excited.

REFERENCES:
patent: 3660848 (1972-05-01), Kerch
patent: 3971031 (1976-07-01), Burke
patent: 4138682 (1979-02-01), Doherty
McCloud, C. J., "Switched Polarization Cubical Quad" Radio Communication Jul. 1975, p. 533.
Adolph, E. H., "An Interlaced Quad Array for 50 & 144 MC" In QST, Feb. 1963, pp. 11-14.

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