Dual-frequency antenna system with common reflector illuminated

Details Dual-frequency antenna system with common reflector illuminated Dual-frequency antenna system with common reflector illuminated

1978-05-17

1980-06-10

Lieberman, Eli

Communications: radio wave antennas

Antennas

Plural separate diverse type

343779, 343835, 343885, H01Q 152

Patent

active

042075734

ABSTRACT:
A dished reflector is illuminated by a primary radiation feed including a rectangular waveguide and a secondary radiation feed comprising two dipoles flanking that waveguide. In order to minimize distortion of the radiation diagram from the secondary feed by the waveguide envelope, at least one elongate corrective member paralleling the dipoles is externally mounted on that envelope and is capacitively coupled or conductively connected thereto at a location where a peripheral current induced by the dipoles is at a maximum. The corrective member, like the dipoles themselves, may be a plate with major faces lying in planes perpendicular to the waveguide axis.

REFERENCES:
patent: 3031665 (1962-04-01), Marie
patent: 3176301 (1965-03-01), Wellons
patent: 3803617 (1974-04-01), Fletcher

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