Antenna with sum and error patterns

Details Antenna with sum and error patterns Antenna with sum and error patterns

H - Electricity

01

Q

351/38

H01Q 9/44 (2006.01) H01Q 19/185 (2006.01) H01Q 21/12 (2006.01) H01Q 25/02 (2006.01)

Patent

CA 1137624

ABSTRACT A simplified short backfire directional antenna provides both sum and error radiation 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.

355654

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