Multi-band antenna assembly

• US 20070257847A1
• Filed: 05/01/2007
• Published: 11/08/2007
• Est. Priority Date: 05/02/2006
• Status: Active Grant

• Current Assignee: Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hon Hai Precision Industry Co., Ltd.
• Inventors: Huang, Yao-Shien, Su, Wen-Fong
• Granted Patent: US 7,633,448 B2
• Time in Patent Office: Days
• US Class Current: 343/700.MS
• CPC Class Codes: H01Q 5/40 Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
• 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-band antenna assembly, comprising: a first antenna used for wireless local area network and comprising a first radiating element comprising a high frequency radiating portion and a low frequency radiating portion, and a first grounding element adapted for assembling said first antenna on an electric device; a second antenna used for wireless wide area network and comprising a second radiating element comprising a high frequency radiating portion and a low frequency radiating portion, and a second grounding element adapted for assembling said second antenna on an electric device; wherein said first antenna and said second antenna independent from each other; said grounding elements of said two antennas comprising two main bodies substantially aligned with each other, said first and second radiating elements of said first antenna and said second antenna locating on the same side of said first and second grounding elements, said low frequency radiating portions of said first antenna and said second antenna extend more than directions.

Claims

1. A multi-band antenna assembly, comprising:

a first antenna used for wireless local area network and comprising a first radiating element comprising a high frequency radiating portion and a low frequency radiating portion, and a first grounding element adapted for assembling said first antenna on an electric device;

a second antenna used for wireless wide area network and comprising a second radiating element comprising a high frequency radiating portion and a low frequency radiating portion, and a second grounding element adapted for assembling said second antenna on an electric device;

wherein said first antenna and said second antenna independent from each other;

said grounding elements of said two antennas comprising two main bodies substantially aligned with each other, said first and second radiating elements of said first antenna and said second antenna locating on the same side of said first and second grounding elements, said low frequency radiating portions of said first antenna and said second antenna extend more than directions.

2. The multi-band antenna assembly as claimed in claim 1, wherein each said main body of said first antenna and said second antenna has a setting portion extending from one end of said body and a free end on the other end of said main body, and wherein said setting portions of the first and second antennas are respectively on the outmost sides of said multi-band antenna assembly and said free ends locate on the inner sides of said multi-band antenna assembly.

3. The multi-band antenna assembly as claimed in claim 2, wherein said free ends of said grounding elements of said first antenna and said second antenna faces to each other.

4. The multi-band antenna assembly as claimed in claim 2, wherein said grounding elements of said first antenna and said second antenna both have a free end edge, said two free end edges of said grounding element are aligned with each other along a parallel direction with a gap formed between end edges thereof.

5. The multi-band antenna assembly as claimed in claim 2, wherein one of said free ends of said grounding elements of said first antenna and said second antenna is located below the other one to form a relative large gap therebetween.

6. The multi-band antenna assembly as claimed in claim 1, wherein said first antenna comprises a first radiating portion served as said high frequency radiating portion corresponding to a frequency band at 5 GHz and a second radiating portion served as said low frequency radiating portion corresponding to a frequency band at 2.4 GHz.

7. The multi-band antenna assembly as claimed in claim 1, wherein said second antenna comprises a first radiating portion served as said high frequency radiating portion corresponding to a frequency band at 1800-1900 MHz and a second radiating portion served as said low frequency radiating portion corresponding to a frequency band at 900 MHz.

8. The multi-band antenna assembly as claimed in claim 1, wherein said first antenna comprises a first radiating portion served as said high frequency radiating portion, a second radiating portion served as said low frequency radiating portion and having a common radiating arm with a first radiating portion, and a connecting element.

9. The multi-band antenna assembly as claimed in claim 8, wherein said first radiating portion comprises a first radiating arm and said second radiating portion comprises a second radiating arm extending from said first radiating portion aligned with said first radiating arm and an L-shape metal arm extending on a different plane from said second radiating arm.

10. The multi-band antenna assembly as claimed in claim 9, wherein said first radiating potion, said second radiating arm and said connecting element are located in the same plane.

11. The multi-band antenna assembly as claimed in claim 9, wherein said L-shape radiating arm comprises a first side arm perpendicular to said second radiating arm and a second side arm parallel to said second radiating arm.

12. The multi-band antenna assembly as claimed in claim 1, wherein said second antenna comprises a first radiating portion whose free end is parallel to said main body of said grounding element of said second antenna and a second radiating portion extending from said free end of said first radiating portion in a vertical direction to said first radiating portion, and said second radiating portion comprises a plurality of metal patches connecting with one another through some folded portions.

13. The multi-band antenna as claimed in claim 1, wherein said first antenna has the same structure as that of said second antenna.

14. The multi-band antenna assembly as claimed in claim 1, wherein said first antenna has the structures different from that of said second antenna.

15. The multi-band antenna assembly as claimed in claim 1, wherein said first antenna comprises a protrusion on said connecting element connect with the inner conductor of a feed line, and said second antenna comprises a protrusion on said high radiating portion to connect with the inner conductor of a feed line.

16. A multi-band antenna assembly comprising:

first and second antennas essentially extending along a same longitudinal direction, the first antenna including a first grounding element extending in primarily a first plane, and a first radiating element defining a first high frequency radiating portion and a first low frequency radiating portion located on a same plane;

the second antenna including a second grounding element extending in primarily a second plane, and a second radiating element defining a second high frequency radiating portion a second low frequency radiating portion located on different planes.

17. The multi-band antenna assembly as claimed in claim 16, wherein the second plane is parallel to the first plane.

18. The multi-band antenna assembly as claimed in claim 17, wherein said first grounding element and the second grounding element are mechanically and electrically engaged with each other.

19. A multi-band antenna assembly comprising:

first and second antennas essentially extending along a same longitudinal direction;

the first antenna including unitarily a first grounding element extending in a first plane, a first radiating element including a first high frequency radiating portion linked to said first grounding element and extending in primarily a second plane parallel to said first plane, and a first low frequency radiating portion extending from said first high frequency radiating portion and extending in primarily a third plane angled to said second plane; and

the second antenna including a second grounding element aligned with the first grounding element in said longitudinal direction.

20. The multi-band antenna assembly as claimed in claim 19, wherein said first low frequency radiating portion further includes a portion defining a fourth plane spaced from while parallel to the third plane.