Reflector antenna feed

Details Reflector antenna feed Reflector antenna feed

2006-02-07

2006-02-07

Ho, Tan (Department: 2821)

Communications: radio wave antennas

Antennas

Wave guide type

C343S785000, C343S840000

Reexamination Certificate

active

06995727

ABSTRACT:
An antenna feed comprises, aligned and centered on an axis OO′, a waveguide having an inside diameter, a first end and a second end, a dielectric body having a portion inside the waveguide and a portion outside the waveguide, the outside portion comprising a section of frustoconical shape having an outside lateral surface of frustoconical shape with two ends, namely a large diameter end and a small diameter end, and a subreflector at the large diameter end of the frustoconical shape. The outside portion comprises, in addition to the frustoconical portion, a cylindrical portion whose diameter is greater than the inside diameter of the waveguide. The cylindrical portion is connected to the frustoconical portion at its small diameter end and the frustoconical outside lateral surface of the dielectric body is smooth.

REFERENCES:
patent: 4673945 (1987-06-01), Syrigos
patent: 4673947 (1987-06-01), Newham
patent: 4963878 (1990-10-01), Kildal
patent: 6020859 (2000-02-01), Kildal
patent: 6724349 (2004-04-01), Baird et al.
patent: 6919855 (2005-07-01), Hills
patent: 1 221 740 (2002-07-01), None
patent: 2 161 324 (1986-01-01), None

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