Antenna with overlapping first and second radiating elements

• US 7,342,544 B2
• Filed: 12/14/2005
• Issued: 03/11/2008
• Est. Priority Date: 09/09/2005
• Status: Expired due to Fees

• Current Assignee: Quanta Computer
• Original Assignee: Quanta Computer
• Inventors: Tsai, Tiao-Hsing, Chiu, Chieh-Ping
• Primary Examiner(s): MANCUSO, HUEDUNG XUAN CAO
• Application Number:
  US11/304,252
• Publication Number:
  US 20070057847A1
• Time in Patent Office: 818 Days
• Field of Search: 343/702, 343/700.MS, 343725-729
• US Class Current: 343/702
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 5/371 Branching current paths
• CPC Class Codes: H01Q 9/0414 in a stacked or folded configuration
• CPC Class Codes: H01Q 9/0421 with a shorting wall or a shorting pin at one end of the element H01Q9/0414 takes precedence

Abstract

An antenna includes a first radiating element, a feeding point, a grounding point, a second radiating element, and first and second conductive elements. The first radiating element has opposite first and second sides. The feeding point is provided on the first radiating element, and is disposed adjacent to the first side of the first radiating element. The grounding point is provided on the first radiating element, and is disposed adjacent to the second side of the first radiating element. The second radiating element is spaced apart from and overlaps the first radiating element. The first conductive element is disposed adjacent to the feeding point, and interconnects the first and second radiating elements. The second conductive element is disposed adjacent to the grounding point, and interconnects the first and second radiating elements.

Claims

1. An antenna, comprising:

a first radiating element having opposite first and second sides;

a feeding point provided on said first radiating element, and disposed adjacent to said first side of said first radiating element;

a grounding point provided on said first radiating element, and disposed adjacent to said second side of said first radiating element;

a second radiating element spaced apart from and overlapping said first radiating element;

a first conductive element disposed adjacent to said feeding point, and interconnecting said first and second radiating elements; and

a second conductive element disposed adjacent to said grounding point, and interconnecting said first and second radiating elements.

2. The antenna as claimed in claim 1, wherein each of said first and second radiating elements is made from a thin metal sheet.

3. The antenna as claimed in claim 1, wherein said first radiating element is generally rectangular in shape, and further has opposite third and fourth sides, said feeding point being disposed proximate to a junction of said first and third sides of said first radiating element, said first radiating element being formed with a slot that extends from said fourth side thereof toward said feeding point.

4. The antenna as claimed in claim 1, wherein said antenna is a dual band antenna that is operable within the 900 MHz bandwidth and the DCS 1800 MHz bandwidth.

5. A mobile phone, comprising:

a housing; and

an antenna including

a first radiating element disposed in said housing, and having opposite first and second sides,

a feeding point provided on said first radiating element, and disposed adjacent to said first side of said first radiating element,

a grounding point provided on said first radiating element, and disposed adjacent to said second side of said first radiating element,

a second radiating element spaced apart from and overlapping said first radiating element, and serving as a portion of said housing,

a first conductive element disposed adjacent to said feeding point, and interconnecting said first and second radiating elements, and

a second conductive element disposed adjacent to said grounding point, and interconnecting said first and second radiating elements.

6. The mobile phone as claimed in claim 5, wherein each of said first and second radiating elements of said antenna is made from a thin metal sheet.

7. The mobile phone as claimed in claim 5, wherein said first radiating element of said antenna is generally rectangular in shape, and further has opposite third and fourth sides, said feeding point being disposed proximate to a junction of said first and third sides of said first radiating element, said first radiating element being formed with a slot that extends from said fourth side thereof toward said feeding point.

8. The mobile phone as claimed in claim 5, wherein said antenna is a dual band antenna that is operable within the 900 MHz bandwidth and the DCS 1800 MHz bandwidth.