DUAL-BAND ANTENNA FOR RADIATING ELECTROMAGNETIC SIGNALS OF DIFFERENT FREQUENCIES

• US 20070040748A1
• Filed: 04/08/2006
• Published: 02/22/2007
• Est. Priority Date: 06/10/2005
• Status: Active Grant

• Current Assignee: Cloud Network Technology Singapore Pte. Ltd. (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Hon Hai Precision Industry Co., Ltd.
• Inventors: Mei, Chia-Hao
• Granted Patent: US 7,573,424 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 5/371 Branching current paths
• CPC Class Codes: H01Q 9/40 Element having extended radiating surface

Abstract

A dual-band antenna for radiating electromagnetic signals of different frequencies includes a ground portion (500), a feeding part (400), and a body (100). The feeding part (400) is for feeding signals. The body (100) includes a first radiating part (110) and a second radiating part (120). The first radiating part includes a bent portion (115), a first free end (111), and a first connecting end (112). The bent portion (115) is between the first free end (111) and the first connecting end (112). The first connecting end (111) is electronically connected to the feeding part (400). The second radiating part (120) includes a second connecting end (122) and a second free end (121). The second connecting end (122) is connected to the first connecting end (112). The shorting part (200) is between the body (100) and the ground portion (500).

Claims

1. A dual-band antenna for radiating electromagnetic signals of different frequencies, comprising:

a ground portion;

a feeding part adjacent to the ground portion, for feeding signals;

a body electronically connected to the feeding part, comprising;

a first radiating part, comprising a first free end, a first connecting end electronically connected to the feeding part, and a bent portion disposed between the first free end and the first connecting end; and

a second radiating part, comprising a second connecting end electronically connected to the first connecting end, and a second free end.

2. The dual-band antenna as claimed in claim 1, further comprising a supporting conductor between the body and the feeding part, for supporting the body.

3. The dual-band antenna as claimed in claim 2, wherein the supporting conductor includes a vertical part, and a horizontal part adjoining the vertical part.

4. The dual-band antenna as claimed in claim 3, wherein the vertical part is electronically connected to a joint portion of the first connecting end and the second connecting end.

5. The dual-band antenna as claimed in claim 3, wherein the horizontal part is electronically connected to the feeding part.

6. The dual-band antenna as claimed in claim 1, wherein a length of the first radiating part is greater than that of the second radiating part.

7. The dual-band antenna as claimed in claim 1, wherein the second radiating part further comprises a bent portion between the second connecting end and the second free end.

8. The dual-band antenna as claimed in claim 1, wherein the bent portion has a selective one of an angular concertinaed configuration and a curved concertinaed configuration.

9. The dual-band antenna as claimed in claim 1, wherein the first free end and the second free end face each other across a gap.

10. The dual-band antenna as claimed in claim 1, wherein the first free end and the second free end terminate the first radiating part and the second radiating part, respectively.

11. The dual-band antenna as claimed in claim 1, wherein the first radiating part and the second radiating part are formed integrally as a single piece.

12. A dual-band antenna comprising:

a body of said antenna comprising a first part for radiating and receiving first signals compatible with a first signal standard, and a second part for radiating and receiving second signals compatible with a second signal standard, one extending end of said first part and one extending end of said second part electrically connectable with a joint portion of said body, another extending end of said first part and another extending end of said second parallel spaced from each other so as to exclusively generate electrically capacitive performance between said first and second parts; and

a feeding part electrically connectable with said joint portion so as to transmit said first signals via said first part of said body and transmit said second signals via said second part of said body respectively.

13. The dual-band antenna as claimed in claim 12, wherein said first part is longer than said second part, and said first part and said second part extend to substantially surround a void space therebetween.

14. A dual-band antenna comprising:

a body of said antenna comprising a joint portion, and a first part and a second part branching out of said joint portion, said first part capable of radiating and receiving first signals compatible with a first signal standard and said second part capable of radiating and receiving second signals compatible with a second signal standard, a distal end of said first part and a distal end of said second part extending to confront each other and be arranged in a parallel spaced manner so as to generate capacitive performance thereat; and

a feeding part electrically connectable with said joint portion so as to transmit said first signals via said first part of said body and transmit said second signals via said second part of said body respectively.