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US 2009/0021441 A1Published application
Primary radiator, low noise blockdownconverter and satellite broadcasting receiving antenna
AssigneeSharp Kabushiki Kaisha
InventorSatoru OHNO
Life of this patent
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Abstract
A primary radiator includes two horns each having an opening on a larger-diameter side and an opening on a tapered smaller-diameter side opposite to the larger-diameter side, and two corrugated portions provided around the opening on the larger-diameter side of the horn. The outermost corrugated portion is formed to surround all of the horns, and the outermost corrugated portion is formed of one sheet metal member. With this structure, sheet-metal processing can be used to form horns of adaptable shapes and a plurality of horns can be formed at a time.
Claims10
A primary radiator comprising:
- a plurality of horns each having an opening on a larger-diameter side and an opening on a tapered smaller-diameter side opposite to the larger-diameter side;
- and
- at least one corrugated portion provided around said opening on the larger-diameter side of said horns each,
- said at least one corrugated portion including an outermost corrugated portion being formed to surround all of said plurality of horns, and said outermost corrugated portion being formed of one sheet metal member.
1 more element
Dependencies are inferred from the claim text.