Antenna Structure

• US 20070030203A1
• Filed: 07/14/2006
• Published: 02/08/2007
• Est. Priority Date: 08/08/2005
• Status: Active Grant

• Current Assignee: Wistron NeWeb Corporation (Wistron Corporation)
• Original Assignee: Wistron NeWeb Corporation (Wistron Corporation)
• Inventors: Li, Chia-Tien, Tsai, Feng-Chi Eddie
• Granted Patent: US 7,528,791 B2
• Time in Patent Office: Days
• US Class Current: 343/702
• CPC Class Codes: A61P 3/04 Anorexiants; Antiobesity agents
• CPC Class Codes: H01Q 5/371 Branching current paths
• CPC Class Codes: H01Q 9/42 with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Abstract

An antenna includes a substrate, a ground element, a radiating element and a feed element. The ground element is disposed on the substrate and has an opening. The radiating element is disposed on the substrate and electrically connects to the ground element. The radiating element comprises a first radiating trace and a second radiating trace. The first radiating trace includes a first segment, a second segment, and a first bended portion connected the first segment and the second segment. The second radiating trace connects to the second segment of the first radiating trace. The feed element is disposed on the substrate and electrically connects to the radiating element. The feed element and the radiating element are at the same surface of the substrate, and a part of the feed element extends and enters the opening.

Claims

1. An antenna comprising:

a substrate;

a ground element disposed on the substrate and having an opening;

a radiating element disposed on the substrate and electrically connected to the ground element, the radiating element comprising;

a first radiating trace including a first segment, a second segment, and a first bended portion connecting the first segment and the second segment; and

a second radiating trace connected to the second segment; and

a feed element disposed on the substrate and electrically connected to the radiating element, wherein the feed element and the radiating element are at the same surface of the substrate, and a part of the feed element extends and enters the opening.

2. The antenna of claim 1, wherein the second radiating trace comprises a third segment, a fourth segment and a second bended portion connected to the third segment and the fourth segment.

3. An antenna comprising:

a substrate having a first surface and a second surface;

a ground element disposed on the first surface and having an opening;

a radiating element disposed on the first surface and electrically connected to the ground element, the radiating element comprising;

a first radiating trace including a first segment, a second segment and a first bended portion connecting the first segment and the second segment; and

a second radiating trace connected to the second segment; and

a feed element disposed on the second surface and electrically connected to the radiating element, wherein a projection of the feed element on the first surface partially overlaps the opening.

4. The antenna of claim 3, wherein the second radiating trace comprises a third segment, a fourth segment and a second bended portion connected to the third segment and the fourth segment.

5. An antenna comprising:

a substrate;

a ground element disposed on the substrate and having an opening;

a radiating element disposed on the substrate and electrically connected to the ground element; and

a feed element disposed on the substrate and electrically connected to the radiating element, wherein the feed element and the radiating element are at the same surface of the substrate, and a part of the feed element extends and enters the opening.

6. The antenna of claim 5, wherein the feed element connects the radiating element at a sidewall of the radiating element, an angle is formed between the feed element and the sidewall, and the range of the angle is between 90 degrees and 180 degrees inclusive.

7. The antenna of claim 5, wherein the opening faces toward the radiating element.

8. The antenna of claim 5, wherein a profile of the opening corresponds to a profile of the feed element.

9. The antenna of claim 5, wherein the feed element enters the opening along a first axis, and a profile of the opening is symmetrical according to the first axis.

10. The antenna of claim 5, wherein the feed element comprises an extending signal line and a feeding point, the extending signal line connects the feeding point and the radiating element, and the feeding point is disposed inside the opening.

11. The antenna of claim 10, further comprising a cable electrically connected to the feeding point for transmitting radio signal.

12. The antenna of claim 10, wherein a distance between the opening and the feed element is at least half of a width of the extending signal line.

13. An antenna comprising:

a substrate having a first surface and a second surface;

a ground element disposed on the first surface and having an opening;

a radiating element disposed on the first surface and electrically connected to the ground element; and

a feed element disposed on the second surface and electrically connected to the radiating element, wherein a projection of the feed element on the first surface partially overlaps the opening.

14. The antenna of claim 13, wherein the feed element connects the radiating element at a sidewall of the radiating element, an angle is formed between the feed element and the sidewall, and the range of the angle is between 90 degrees and 180 degrees inclusive.

15. The antenna of claim 13, wherein the opening faces toward the radiating element.

16. The antenna of claim 13, wherein a profile of the opening corresponds to a profile of the feed element.

17. The antenna of claim 13, wherein a projection of the feed element on the first surface enters the opening along a first axis, and a profile of the opening is symmetrical according to the first axis.

18. The antenna of claim 13, wherein the substrate further has a through hole, and the feed element connects the radiating element via the through hole.

19. The antenna of claim 13, wherein the feed element comprises an extending signal line and a feeding point, the extending signal line connects the feeding point and the radiating element, and a projection of the feeding point on the first surface is disposed inside the opening.

20. The antenna of claim 19, further comprising a cable electrically connected to the feeding point for transmitting radio signal.

21. The antenna of claim 20, further comprising a ground part disposed on the second surface of the substrate, a plurality of conductive holes is formed between the ground part and the ground element so that the ground part electrically connects to the ground element via the plurality of conductive holes.

22. The antenna of claim 21, wherein the cable comprises a coaxial cable with an outer coaxial braid shield, the outer coaxial braid shield electrically connects the ground part.

23. The antenna of claim 19, wherein a distance between the opening and a projection of the feed element on the first surface is at least half of a width of the extending signal line.

24. An electronic device, comprising:

a case; and

an antenna disposed in the case, the antenna comprising;

a substrate;

a ground element disposed on the substrate and having an opening;

a radiating element disposed on the substrate and electrically connected to the ground element; and

a feed element disposed on the substrate and electrically connected to the radiating element, wherein the feed element and the radiating element are at the same surface of the substrate, and a part of the feed element extends and enters the opening.

25. The electronic device of claim 24, wherein the electronic device comprises a notebook.

26. The electronic device of claim 24, wherein the opening has T-shaped profile.

27. The electronic device of claim 24, wherein the opening has a U-shaped profile.

28. An electronic device, comprising:

a case; and

an antenna disposed in the case, the antenna comprising;

a substrate having a first surface and a second surface;

a ground element disposed on the first surface and having an opening;

a radiating element disposed on the first surface and electrically connected to the ground element; and

a feed element disposed on the second surface and electrically connected to the radiating element, wherein a projection of the feed element on the first surface partially overlaps the opening.

29. The electronic device of claim 28, wherein the electronic device comprises a notebook.

30. The electronic device of claim 28, wherein the opening has a T-shaped profile.

31. The electronic device of claim 28, wherein the opening has a U-shaped profile.