DUAL BAND ANTENNA WITH CIRCULAR POLARIZATION
First Claim
1. A dual band antenna with circular polarization comprising:
- a substrate having a vacant area and a feed-in point, wherein the feed-in point is disposed outside the vacant area;
a radiation metal portion, disposed vertically to a surface of the substrate at an edge of the vacant area, comprising a radiation surface and a meandering structure, wherein the radiation surface is disposed at one side of the radiation metal portion near the substrate, and the meandering structure is disposed at another side of the radiation metal portion far from the substrate; and
a feed-in stripline disposed on the substrate, wherein one end point of the feed-in stripline is electrically connected to the feed-in point, and the other end point of the feed-in stripline is electrically connected to the radiation metal portion,wherein, the meandering structure comprises a first line segment, a second line segment, a third line segment, a first connecting segment and a second connecting segment;
the first line segment, the second line segment and the third line segment are mutually parallel;
the first line segment and the second line segment are interconnected with the first connecting segment;
the second line segment and the third line segment are interconnected with the second connecting segment; and
the third line segment is disposed between the first line segment and the second line segment.
1 Assignment
0 Petitions
Accused Products
Abstract
A dual band antenna with circular polarization is applied in a handheld device and includes a substrate, a radiation metal portion and a feed-in stripline. The substrate has a vacant area and a feed-in point. The feed-in point is disposed near and outside the vacant area. The radiation metal portion is disposed vertically to a surface of the substrate at the edge of the vacant area, and includes a radiation surface and a meandering structure. The radiation surface is disposed at one side of the radiation metal portion and near the substrate. The meandering structure is disposed at another side of the radiation metal portion and far from the substrate. The feed-in stripline is disposed on the substrate. One end of the feed-in stripline is electrically connected to the feed-in point, and the other end of the feed-in stripline is electrically connected to the radiation metal portion.
45 Citations
10 Claims
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1. A dual band antenna with circular polarization comprising:
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a substrate having a vacant area and a feed-in point, wherein the feed-in point is disposed outside the vacant area; a radiation metal portion, disposed vertically to a surface of the substrate at an edge of the vacant area, comprising a radiation surface and a meandering structure, wherein the radiation surface is disposed at one side of the radiation metal portion near the substrate, and the meandering structure is disposed at another side of the radiation metal portion far from the substrate; and a feed-in stripline disposed on the substrate, wherein one end point of the feed-in stripline is electrically connected to the feed-in point, and the other end point of the feed-in stripline is electrically connected to the radiation metal portion, wherein, the meandering structure comprises a first line segment, a second line segment, a third line segment, a first connecting segment and a second connecting segment;
the first line segment, the second line segment and the third line segment are mutually parallel;
the first line segment and the second line segment are interconnected with the first connecting segment;
the second line segment and the third line segment are interconnected with the second connecting segment; and
the third line segment is disposed between the first line segment and the second line segment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification