TRIPLE BAND ANTENNA

• US 20090184876A1
• Filed: 09/17/2008
• Published: 07/23/2009
• Est. Priority Date: 01/22/2008
• Status: Active Grant

• Current Assignee: ASUSTek Computer, Inc.
• Original Assignee: ASUSTek Computer, Inc.
• Inventors: LIU, Ming-Yen
• Granted Patent: US 8,395,549 B2
• Time in Patent Office: Days
• US Class Current: 343/700.MS
• CPC Class Codes: H01Q 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142
• CPC Class Codes: H01Q 5/00 Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements combinations of separate active antenna units operating in different wavebands and connected to a common feeder system H01Q21/30
• CPC Class Codes: H01Q 5/371 Branching current paths
• CPC Class Codes: H01Q 9/0421 with a shorting wall or a shorting pin at one end of the element H01Q9/0414 takes precedence
• CPC Class Codes: H01Q 9/40 Element having extended radiating surface

Abstract

A triple band antenna includes a feed-in portion, a first radiating portion, a second radiating portion, a third radiating portion and a grounding portion. The first radiating portion is connected to a first side of a first end of the feed-in portion. A second end of the second radiating portion is connected to a second side of the first end of the feed-in portion. The third radiating portion is connected to a third end of the second radiating portion. The grounding portion is located at two sides of the feed-in portion.

Claims

1. A triple band antenna comprising:

a feed-in portion;

a first radiating portion connected to a first side of a first end of the feed-in portion;

a second radiating portion, a second end of the second radiating portion is connected to a second side of the first end of the feed-in portion;

a third radiating portion connected to a third end of the second radiating portion; and

a grounding portion located at two sides of the feed-in portion.

2. The triple band antenna according to claim 1, wherein the first radiating portion is a middle-frequency radiating portion.

3. The triple band antenna according to claim 1, wherein the second radiating portion is a high-frequency radiating portion.

4. The triple band antenna according to claim 1, wherein the third radiating portion is a low-frequency radiating portion.

5. The triple band antenna according to claim 1 further comprising a first slit disposed between the grounding portion and the feed-in portion.

6. The triple band antenna according to claim 5 further comprising a matching slot communicating with the first slit and the matching slot located between the first slit and the grounding portion.

7. The triple band antenna according to claim 1 further comprising a second slit disposed between the grounding portion and the second radiating portion.

8. The triple band antenna according to claim 7 further comprising a third slit disposed between the grounding portion and the third radiating portion and the third slit communicating with the second slit.

9. The triple band antenna according to claim 1, wherein the first radiating portion extends from the first side of the first end of the feed-in portion and the first radiating portion gradually broadens.

10. The triple band antenna according to claim 1, wherein the second radiating portion extends from the second side of the first end of the feed-in portion and the second radiating portion gradually broadens.

11. The triple band antenna according to claim 1, wherein the third radiating portion extends from the third end of the second radiating portion and the third radiating portion gradually broadens.

12. The triple band antenna according to claim 1, wherein the feed-in portion, the first radiating portion, the second radiating portion, the third radiating portion and the grounding portion are coplanar.