Portable terminal

• US 8,049,670 B2
• Filed: 02/27/2009
• Issued: 11/01/2011
• Est. Priority Date: 03/25/2008
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Hyun, An-Sun, Yun, Chang-Won, Jung, Kang-Jae
• Primary Examiner(s): LE, HOANGANH T
• Application Number:
  US12/394,224
• Publication Number:
  US 20090243944A1
• Time in Patent Office: 977 Days
• Field of Search: 381/312, 381/323, 381/322, 381/315, 381/60, 343/841, 343/702, 455/575.1, 455/575.7
• US Class Current: 343/702
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/48 Earthing means; Earth screens; Counterpoises
• CPC Class Codes: H01Q 1/52 Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure absorbing means H01Q17/00

Abstract

A portable terminal may include a terminal body, a printed circuit board having a ground unit coupled to an antenna, and an electric field reducing unit to transfer a current flowing in the ground unit to a side surface of the terminal body and to reduce strength of an electric field.

Claims

1. A portable terminal comprising:

a terminal body having a receiver at a first end of the terminal body;

a display located on a surface of the terminal body;

a printed circuit board having a ground unit coupled to an antenna disposed at a second end of the terminal body, wherein a portion of the printed circuit board is overlapped by the display; and

an electric field reducing unit to couple to the ground unit, to transfer a current flowing in the ground unit to a side of the terminal body and to reduce strength of an electric field formed at the receiver,

wherein the electric field reducing unit comprises;

a connecting portion configured to couple to a side of the printed circuit board, and

an extending portion formed at the side of the printed circuit board with a predetermined distance therebetween, the extending portion to extend from the connecting portion in a direction away from the receiver.

2. The portable terminal of claim 1, wherein the antenna comprises an internal antenna mounted at the second end of the terminal body.

3. The portable terminal of claim 1, wherein the extending portion is formed in a lengthwise direction parallel to the printed circuit board.

4. The portable terminal of claim 1, wherein the connecting portion is a Flexible Printed Circuit Board (FPCB), and the extending portion is a key plate that includes a switch to enable inputting of information by a push operation.

5. The portable terminal of claim 1, wherein the antenna to transmit and receive an electric wave having a prescribed wavelength, and the electric field reducing unit has a length corresponding to ¼

times of the prescribed wavelength.

6. The portable terminal of claim 1, wherein the extending portion longitudinally extends from the connection portion and such that the predetermined distance is between the extending portion and the side of terminal body.

7. A portable terminal comprising:

an antenna to receive a signal;

a receiver to output an audio sound based on the received signal;

a terminal body to support the receiver disposed at a first end of the terminal body and the antenna disposed at a second end of the terminal body, the terminal body having a side that extends in a longitudinal direction;

a circuit board to couple to the antenna and to the receiver, wherein at least a portion of the circuit board is overlapped by a display provided on a surface of the terminal body; and

an electric field reducing unit to couple to the circuit board, and to receive current from the circuit board, wherein the electric field reducing unit includes;

a first portion to couple to the circuit board; and

a second portion formed at the side of the printed circuit board with a predetermined distance therebetween, the second portion to extend from the first portion in the longitudinal direction along the side of the terminal body.

8. The portable terminal of claim 7, wherein the electric field reducing unit receives the current from the circuit board and reduces an electric field strength about the receiver.

9. The portable terminal of claim 7, wherein the second portion is formed in a lengthwise direction parallel to the circuit board.

10. The portable terminal of claim 7, wherein the first portion is a Flexible Printed Circuit Board (FPCB), and the second portion is a key plate that includes a switch to enable inputting of information by a push operation.

11. The portable terminal of claim 7, wherein the antenna to transmit and receive an electric wave at a prescribed wavelength, and the second portion of the electric field reducing unit has a length corresponding to ¼

times of the prescribed wavelength.