Multi-frequency antenna and an electric device thereof

• US 20080231516A1
• Filed: 08/08/2007
• Published: 09/25/2008
• Est. Priority Date: 03/20/2007
• Status: Active Grant

• Current Assignee: Wistron NeWeb Corporation (Wistron Corporation)
• Original Assignee: Wistron NeWeb Corporation (Wistron Corporation)
• Inventors: Wei, Shen-Pin
• Granted Patent: US 7,760,143 B2
• Time in Patent Office: Days
• US Class Current: 343/700MS
• CPC Class Codes: H01Q 13/10 Resonant slot antennas
• CPC Class Codes: H01Q 9/30 with feed to end of elongated active element, e.g. unipole H01Q9/44 takes precedence
• CPC Class Codes: H01Q 9/40 Element having extended radiating surface
• CPC Class Codes: H01Q 9/42 with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Abstract

A multi-frequency antenna is disclosed. The multi-frequency antenna is positioned on an electric device for transmitting Wi-Fi and Wimax wireless signals. The multi-frequency antenna comprises a radiating element, a grounding element and a connecting element. The radiating element comprises a first radiating area and a second radiating area, which are perpendicular to each other. The connecting element is connected to the second radiating area of the radiating element and the grounding element.

Claims

1. A multi-frequency antenna comprising:

a radiating element having a first radiation area and a second radiation area, wherein the first radiation area and the second radiation area are perpendicular to each other;

a grounding element;

a connecting element connecting the second radiation area of the radiating element and the grounding element; and

a feeding point located on the second radiation area that transmits an electrical signal.

2. The multi-frequency antenna as claimed in claim 1, wherein between the second radiation area of the radiating element and the grounding element there is a gap.

3. The multi-frequency antenna as claimed in claim 1, wherein the length of the second radiation area is larger than the length of the grounding element.

4. The multi-frequency antenna as claimed in claim 1, wherein the length of the second radiation area is larger than or equal to the length of the first radiation area.

5. The multi-frequency antenna as claimed in claim 1, wherein the radiating element further comprises a third radiation area, the third radiation area being perpendicularly connected to the second radiation area.

6. The multi-frequency antenna as claimed in claim 5, wherein the first radiation area and the third radiation area are pointing toward the same direction or opposite directions.

7. The multi-frequency antenna as claimed in claim 5, wherein a fourth radiation area is perpendicularly connected to the first radiation area, and a fifth radiation area is perpendicularly connected to the third radiation area.

8. The multi-frequency antenna as claimed in claim 1, wherein the grounding element further comprises a first plane and a second plane, the first plane being perpendicularly connected to the second plane.

9. An electric device having a wireless transfer function, the electric device comprising:

a wireless signal module; and

a multi-frequency antenna electrically connecting the wireless signal module, the multi-frequency antenna comprising;

a radiating element having a first radiation area and a second radiation area, wherein the first radiation area and the second radiation area are perpendicular to each other;

a grounding element;

a connecting element connecting the second radiation area of the radiating element and the grounding element; and

a feeding point located on the second radiation area that transmits an electrical signal.

10. The electric device as claimed in claim 9, wherein between the second radiation area of the radiating element and the grounding element there is a gap.

11. The electric device as claimed in claim 9, wherein the length of the second radiation area is larger than the length of the grounding element.

12. The electric device as claimed in claim 9, wherein the length of the second radiation area is larger than or equal to the length of the first radiation area.

13. The electric device as claimed in claim 9, wherein the radiating element further comprises a third radiation area, the third radiation area being perpendicularly connected to the second radiation area.

14. The electric device as claimed in claim 13, wherein the first radiation area and the third radiation area are pointing toward the same direction or opposite directions.

15. The electric device as claimed in claim 13, wherein a fourth radiation area is perpendicularly connected to the first radiation area, and a fifth radiation area is perpendicularly connected to the third radiation area.

16. The electric device as claimed in claim 9, wherein the grounding element further comprises a first plane and a second plane, the first plane being perpendicularly connected to the second plane.