DIRECTION FINDER ANTENNA
First Claim
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1. A direction finder antenna comprising:
- an antenna mount having at least one flat portion; and
extensible whip antenna elements of four or more which use the flat portion of the antenna mount as an antenna upright-provided surface and are respectively upright provided rotatably at antenna upright-provided points formed on one circumference at the antenna upright-provided surface, wherein the extensible whip antenna elements are respectively capable of being rotatably set to arbitrary angular positions lying in sector-shaped areas each having an open angle of 180°
orthogonal to the one circumference, which are formed on the antenna upright-provided surface side, centering on the respective antenna upright-provided points at the antenna upright-provided surface.
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Abstract
The present invention provides a direction finder antenna that includes an antenna mount having one flat portion and four extensible whip antenna elements respectively upright provided rotatably at antenna upright-provided points formed on one circumference at an antenna upright-provided surface. The four extensible whip antenna elements can be rotatably set to arbitrary angular positions lying in sector-shaped areas each having an open angle of 180° orthogonal to the one circumference, which are formed on the antenna upright-provided surface side, centering on the respective antenna upright-provided points at the antenna upright-provided surface.
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Citations
7 Claims
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1. A direction finder antenna comprising:
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an antenna mount having at least one flat portion; and
extensible whip antenna elements of four or more which use the flat portion of the antenna mount as an antenna upright-provided surface and are respectively upright provided rotatably at antenna upright-provided points formed on one circumference at the antenna upright-provided surface, wherein the extensible whip antenna elements are respectively capable of being rotatably set to arbitrary angular positions lying in sector-shaped areas each having an open angle of 180°
orthogonal to the one circumference, which are formed on the antenna upright-provided surface side, centering on the respective antenna upright-provided points at the antenna upright-provided surface.
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2. A direction finder antenna comprising:
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an antenna mount having at least one flat portion; and
extensible whip antenna elements of four or more which use the flat portion of the antenna mount as an antenna upright-provided surface and are respectively upright provided rotatably at antenna upright-provided points formed on one circumference at the antenna upright-provided surface, wherein the extensible whip antenna elements are respectively capable of being rotatably set to arbitrary angular positions in hemispherical areas formed on the antenna upright-provided surface side, lying in spherical areas with respective antenna upright-provided points at the antenna upright-provided surface as the centers.
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3. A direction finder antenna comprising:
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an antenna mount having upper and lower surface portions and side surface portions formed so as to connect side edges of the upper surface portion and side edges of the lower surface portion; and
a plurality of extensible whip antenna elements which respectively use the side surface portions of the antenna mount as antenna upright-provided surfaces and are respectively upright provided rotatably at antenna upright-provided points formed at plural equal intervals on a straight line connecting the same vertical positions at the antenna upright-provided surfaces, wherein the extensible whip antenna elements are respectively capable of being rotatably set to arbitrary angular positions lying in sector-shaped areas each having an open angle of 180°
orthogonal to the straight line formed on the antenna upright-provided surfaces sides, centering on the respective antenna upright-provided points at the antenna upright-provided surfaces. - View Dependent Claims (5, 6, 7)
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4. A direction finder antenna comprising:
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an antenna mount having upper and lower surface portions and side surface portions formed so as to connect side edges of the upper surface portion and side edges of the lower surface portion; and
a plurality of extensible whip antenna elements which respectively use the side surface portions of the antenna mount as antenna upright-provided surfaces and are respectively upright provided rotatably at antenna upright-provided points formed at plural equal intervals on a straight line connecting the same vertical positions at the antenna upright-provided surfaces, wherein the extensible whip antenna elements are respectively capable of being rotatably set to arbitrary angular positions in hemispherical areas formed on the antenna upright-provided surfaces sides, lying in spherical areas with the respective antenna upright-provided points at the antenna upright-provided surfaces as the centers.
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Specification