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US 9,425,508 B2Granted
Antenna structure and wireless communication device using same
AssigneeChiun Mai Communication Systems, Inc.
InventorsChih-Hung Lai, Yen-Hui Lin
Life of this patent
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Abstract
An antenna structure includes a feed terminal, a first antenna, and a second antenna. The first antenna includes a first antenna portion connected to the feed terminal, and a second antenna portion connected to the first antenna portion. The second antenna is substantially parallel to the second antenna portion and cooperatively defines a space with the second antenna portion.
Claims20
An antenna structure comprising:
- a feed terminal;
- a first antenna comprising a first antenna portion connected to the feed terminal, and a second antenna portion connected to the first antenna portion;
- and
- a second antenna;
- wherein the second antenna is parallel to the second antenna portion and cooperatively defines a space with the second antenna portion;
- the first antenna portion comprises a first segment, a second segment, and a third segment an edge of the second segment is connected to an edge of the first segment and an angle is formed between the connected edges of the first segment and the second segment;
- the third segment is connected to the second segment and is perpendicular to the second segment.
4 more elements
A wireless communication device, comprising:
- a circuit board comprising a feed portion;
- an antenna structure comprising a feed terminal, a first antenna and a second antenna, the first antenna comprising a first antenna portion connected to the feed terminal, and a second antenna portion connected to the first antenna portion;
- the first antenna portion comprising a first segment, a second segment, and a third segment an edge of the second segment connected to an edge of the first segment and an angle formed between the connected edges of the first segment and the second segment the third segment connected to the second segment and perpendicular to the second segment, the second antenna being parallel to the second antenna portion and cooperatively defining a space with the second antenna portion;
- and
- a matching circuit electronically connected between the feed portion and the antenna structure.
2 more elements
A wireless communication device, comprising:
- a circuit board comprising a feed portion;
- an antenna structure comprising a feed terminal, a first antenna and a second antenna, the first antenna comprising a first antenna portion connected to the feed terminal, and a second antenna portion connected to the first antenna portion, the second antenna being parallel to the second antenna portion and cooperatively defining a space with the second antenna portion;
- and
- a matching circuit electronically connected between the feed portion and the antenna structure;
- wherein the matching circuit comprises a first matching module, the first matching module comprises a first capacitor, a first inductor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, and a first switch;
- the feed portion is electronically connected to the first capacitor, the first capacitor is grounded by the first inductor;
- the second capacitor, the third capacitor, the fourth capacitor, and the fifth capacitor are connected in parallel and are electronically connected to the antenna structure;
- the first switch comprises a first end and a second end, the first end of the first switch is connected between the first capacitor and the first inductor, the second end of the first switch is selectively connected to the second capacitor, the third capacitor, the fourth capacitor, or the fifth capacitor.
5 more elements
Dependencies are inferred from the claim text.