Antenna with low SAR

• US 7,474,269 B2
• Filed: 03/21/2007
• Issued: 01/06/2009
• Est. Priority Date: 03/21/2007
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Laird Technologies Incorporated (DuPont de Nemours, Inc.)
• Inventors: Liang, Xiaotao, Potter, Brian T., Bezian, Saeid, Mayer, Cheryl
• Primary Examiner(s): Wimer; Michael C
• Application Number:
  US11/689,120
• Publication Number:
  US 20080231515A1
• Time in Patent Office: 657 Days
• Field of Search: 343/702, 343/906, 455/575.5, 455/575.6, 455/575.7
• US Class Current: 343/702
• CPC Class Codes: H01Q 1/245 with means for shaping the antenna pattern, e.g. in order to protect user against rf exposure

Abstract

An antenna having a low specific absorption rate has it power feed connected to radio frequency power such that a connector is arranged between a head of the user and a portion of the power feed.

Claims

1. A power feed for an antenna on a portable, wireless device, comprising:

a first portion extending along a first side of a connector to an edge of the connector, the first side of the connector adapted to be proximate a user;

a second portion connected to the first portion proximate the first side of the connector, the second portion traversing the edge from the first side to a second side of the connector;

a third portion connected to the second portion proximate the second side of the connector, the third portion extending away from the edge along the second side, the second side of the connector adapted to be distal the user; and

a contact adapted to be distal to the user coupling the third portion to a power feed on a printed circuit board, whereby the power feed is to reduce a specific absorption rate associated with using the portable, wireless device.

2. The power feed according to claim 1, wherein the first portion is separated from the first side of the printed circuit board by a distance.

3. The power feed according to claim 1, wherein the contact is a spring contact.

4. The power feed according to claim 1, wherein the contact is soldered to the second side of the printed circuit board.

5. The power feed according to claim 1, wherein the contact is a press fit contact.

6. The power feed according to claim 1, wherein the first portion meanders along the first side.

7. The power feed according to claim 1, wherein the connector comprises an electromagnetic shield.

8. The power feed according to claim 7, wherein the electromagnetic shield is proximate the first portion.

9. The power feed according to claim 1, wherein the contact is separate and electrically coupled to the third portion.

10. A portable, wireless device including a device housing and an antenna including an antenna housing with a radiating portion contained in the antenna housing, the portable, wireless device comprising:

a connector connecting the antenna housing and the portable, wireless device, the connector having a first side adapted to be proximate a user, a second side adapted to be distal a user, and at least one edge;

a meander line power feed coupled to the antenna proximate a top of the device housing, the meander line comprising;

a first portion, the first portion extending along the first side of the connector to the at least one edge;

a second portion, the second portion connected to the first portion proximate the first side and traversing the at least one edge to the second side;

a third portion, the third portion connected to the second portion proximate the second side, the third portion extending along the second side; and

a contact adapted to be distal to the user, the contact coupled to the third portion and a power feed point on a printed circuit board, whereby the power feed is adapted to reduce a specific absorption rate associated with using the portable, wireless device.

11. The portable, wireless device of claim 10, wherein the first portion is separated from the at least one printed circuit, board by a distance.

12. The portable, wireless device according to claim 10, wherein the contact is a spring contact.

13. The portable, wireless device according to claim 10, wherein the contact is soldered to the power feed point.

14. The portable, wireless device according to claim 10, wherein the contact is a press fit contact.

15. The portable, wireless device according to claim 10, wherein the printed circuit board comprises an electromagnetic shield.

16. The portable, wireless device according to claim 10, wherein the connector comprises a groove to receive the power feed.