Aerial system for broadcasting having a passive middle antenna f

Details Aerial system for broadcasting having a passive middle antenna f Aerial system for broadcasting having a passive middle antenna f

1977-07-05

1979-09-25

Lieberman, Eli

Communications: radio wave antennas

Antennas

Antenna with parasitic reflector

343853, H01Q 1926, H01Q 324

Patent

active

041692667

ABSTRACT:
An antenna system for broadcasting comprises a coplanar array of three vertical aerials spaced a quarter wavelength apart, the middle aerial serving as a passive reflector while the outer two are concurrently energized with currents of equal amplitude and frequency in phase or in phase opposition with each other. The resulting radiation pattern is circular in the first instance; in the second case the pattern is generally hourglass-shaped and bisected by the common plane of the aerials.

REFERENCES:
patent: 1740851 (1929-12-01), Franklin
patent: 2251997 (1941-08-01), Goldmann
patent: 3175219 (1965-03-01), Wernick et al.
patent: 3299429 (1967-01-01), McMullin

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