Sharp Kabushiki Kaisha Corporation

Yosuke Okabe

Atsushi Nagano

A dielectric feedhorn as a feedhorn according to the present invention, with which a feedhorn, a radio wave receiving converter and an antenna capable of suppressing an increase in manufacturing costs can be obtained, includes a chassis body including a waveguide having an opening, and a dielectric member. The dielectric member is connected to the opening of the waveguide, and constituted by dielectrics as a plurality of members.

Feedhorn, radio wave receiving converter and antenna

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.

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Osaka, Japan

Yosuke Okabe