Short backfire antenna with sum and error patterns

Details Short backfire antenna with sum and error patterns Short backfire antenna with sum and error patterns

1979-11-19

1980-12-16

Lieberman, Eli

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343836, 343854, H01Q 19185, H01Q 2502

Patent

active

042400805

ABSTRACT:
A simplified short backfire directional antenna provides both sum and error adiation patterns in the H-plane. Three parallel dipoles are mounted above a pan-type reflector, with a small metal reflector disc over the dipoles. The center dipole is excited to produce a sum pattern and the two end dipoles are excited out of phase to provide an error pattern with a broadside null in the H-plane. Alternatively, a hybrid circuit may be used with a pair of parallel dipoles to generate the desired patterns. Improved gain and resolution are achieved with a small antenna array.

REFERENCES:
patent: 3742513 (1973-06-01), Ehrenspeck

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