Antenna system for deriving cardiod patterns

Details Antenna system for deriving cardiod patterns Antenna system for deriving cardiod patterns

1975-09-05

1977-02-08

Lieberman, Eli

Communications: radio wave antennas

Antennas

Plural antennas spaced a fractional or full wave length apart

343113R, 343853, H01Q 2106

Patent

active

040074617

ABSTRACT:
An Isolation Differential Combiner which accepts signals from two spaced vertical whip antenna elements and which are then combined through delay lines so that the resulting said reception pattern is a cardioid signal pattern at the combiner outputs. The isolation of the two signals is accomplished by connecting wide-band balanced transformers as hybrids. The differential component of the two signals present at the hybrid combiner is available at each secondary winding of each wide-band balanced transformer.

REFERENCES:
patent: 3226724 (1965-12-01), Brueckmann
patent: 3396398 (1968-08-01), Dunlavy
patent: 3683385 (1972-08-01), Corzine et al.

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