Feedhorn, radio wave receiving converter and antenna

Details Feedhorn, radio wave receiving converter and antenna Feedhorn, radio wave receiving converter and antenna

2006-09-19

2006-09-19

Dinh, Trinh Vo (Department: 2821)

Communications: radio wave antennas

Antennas

Wave guide type

C343S785000, C343S771000

Reexamination Certificate

active

07109941

ABSTRACT:
A feedhorn, a radio wave receiving converter, and an antenna that can be reduced in size and have high reliability can be obtained. A feedhorn portion constitutes part of a converter, and includes a chassis body with a waveguide having an opening, a dielectric as a dielectric member connected to the opening, and a waterproof cover as a protective member. The waterproof cover covers the dielectric and contacts (tightly attached) to a portion of the surface of the dielectric (in the dielectric, the portion of the surface away from waveguide). The waterproof cover is formed of a material having substantially the same electric characteristics (permittivity and dielectric loss tangent) as the material forming the dielectric.

REFERENCES:
patent: 5384557 (1995-01-01), Yoshida et al.
patent: 5550553 (1996-08-01), Yamaki et al.
patent: 6714166 (2004-03-01), Sasaki et al.
patent: 2005/0062664 (2005-03-01), Hidai et al.
patent: 2005/0140560 (2005-06-01), Nagano et al.
patent: 2001-217644 (2001-08-01), None
patent: 2002-353728 (2002-12-01), None

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