Antenna with rotatable sensitivity pattern

Details Antenna with rotatable sensitivity pattern Antenna with rotatable sensitivity pattern

1974-01-17

1976-12-07

Lieberman, Eli

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343844, 343876, H01Q 324

Patent

active

039965929

ABSTRACT:
Antenna having a selectively rotatably extendable sensitivity pattern provided by an array of three or more dipole antenna units, each of substantially equal mechanical length and located at the corners of a substantially regular polygon having the same number of sides as the number of units in the array and switching means having connections to each dipole unit to selectively energize at least one of said units and interpose an electrically-lengthening inductive reactance in at least two other units located, with respect to the direction in which the sensitivity is to be extended, behind and on either side of an energized unit to serve as parasitic reflectors extending the lobe of sensitivity of an energized unit in the selected direction.

REFERENCES:
patent: 1860123 (1932-05-01), Yagi
patent: 2349976 (1944-05-01), Matsudaira
patent: 2962715 (1960-11-01), Byatt
patent: 3175219 (1965-03-01), Wernick et al.

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