Antenna element-waveguide converter and radio communication device using the same
AssigneeSharp Kabushiki Kaisha
InventorAtsushi YAMADA
Life of this patent
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Abstract
An antenna element-waveguide converter includes an antenna substrate having, on one surface, an antenna element and rectangular metal plates arranged in a plurality of rows to surround this antenna element, and a waveguide having, at one end, an opening opposed to the one surface of the antenna substrate. Surfaces of the rectangular metal plates and the opening of the waveguide are arranged with a predetermined gap left therebetween in a direction perpendicular to the one surface of the antenna substrate. Thus arranging the antenna substrate and the waveguide avoids a stress due to assembly variations, which can achieve favorable antenna characteristics.
Claims10
An antenna element-waveguide converter comprising:
- a first substrate having, on one surface, an antenna element and rectangular metal plates arranged in a plurality of rows so as to surround said antenna element;
- and
- a waveguide having, at one end, a first opening opposed to said one surface of said first substrate,
- surfaces of said rectangular metal plates and said first opening of said waveguide being arranged with a predetermined gap left therebetween in a direction perpendicular to said one surface of said first substrate.
A radio communication device comprising:
- a first substrate having, on one surface, an antenna element and a plurality of rectangular metal plates arranged around said antenna element;
- a second substrate on which said first substrate is mounted;
- a waveguide having, at one end, a first opening opposed to said one surface of said first substrate;
- a horn antenna having a second opening coupled to said waveguide;
- and
- a housing accommodating said first substrate and said second substrate,
- surfaces of said plurality of rectangular metal plates and said first opening of said waveguide being arranged with a predetermined gap left therebetween in a direction perpendicular to said one surface of said first substrate.
Dependencies are inferred from the claim text.