Raising antenna efficiency for a portable communication device

• US 7,760,145 B2
• Filed: 02/17/2005
• Issued: 07/20/2010
• Est. Priority Date: 03/22/2004
• Status: Expired due to Fees

• Current Assignee: Sony Ericsson Mobile Communications (Sony Group Corp.)
• Original Assignee: Sony Ericsson Mobile Communications USA Incorporated (Sony Group Corp.)
• Inventors: Gold, Kristina
• Primary Examiner(s): Owens; Douglas W
• Assistant Examiner(s): DUONG, DIEU HIEN
• Application Number:
  US10/593,997
• Publication Number:
  US 20070290945A1
• Time in Patent Office: 1,979 Days
• Field of Search: 343/702, 343/700.MS
• US Class Current: 343/702
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/44 using equipment having another main function to serve additionally as an antenna , e.g. means for giving an antenna an aesthetic aspectH01Q1/27 - H01Q1/34 take precedence
• CPC Class Codes: H01Q 1/528 reducing the re-radiation of a support structure in a parabolic reflector antenna H01Q19/023
• 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: H04M 1/03 Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets

Abstract

Portable communication devices are provided that include a board for receiving electrical circuits and have a ground plane and at least one throughhole. The devices also include an antenna element on one side of the board and an acoustic element placed on the board and aligned with the throughhole. The devices further include a mesh of electrically conducting material positioned between a cover of the acoustic element and the board. The mesh can be connected to the ground plane of the board to enhance the efficiency of the antenna.

Claims

1. A portable communication device comprising:

a board configured to receive electrical circuits, the board comprising a ground plane and at least one throughhole;

an antenna element provided on a first side of the board;

an acoustic element placed on the board and aligned with the throughhole; and

a mesh comprising an electrically conducting material positioned between a cover of the acoustic element and the board,

wherein the mesh is arranged to be substantially parallel to and adjacent the at least one throughhole and is connected to the ground plane of the board to enhance the efficiency of the antenna.

2. The portable communication device of claim 1, wherein the antenna element is positioned with at least a portion at a distance above the board, for defining an antenna volume between the board and the antenna element, and wherein the at least one hole is provided under the antenna element.

3. The portable communication device of claim 2, wherein the acoustic element is positioned on a second side of the board.

4. The portable communication device of claim 3, wherein an acoustic box associated with the acoustic element is positioned in the antenna volume.

5. The portable communication device of claim 1, wherein the mesh is connected to the ground plane using at least one electrically conducting springs.

6. The portable communication device of claim 1, wherein the mesh is connected to the ground plane using an electrically conducting gasket.

7. The portable communication device of claim 1, wherein the antenna element comprises a PIFA antenna element.

8. The portable communication device of claim 1, further comprising a cellular phone.

9. The portable communication device of claim 1, wherein the acoustic element comprises a non-conductive casing.

10. The portable communication device of claim 1, wherein the acoustic element comprises a plastic casing.

11. The portable communication device of claim 1, wherein the acoustic element cover comprises a non-conductive cover.

12. The portable communication device of claim 1, wherein the mesh is connected to the ground plane via solder.