Multi-band antenna and notebook computer with built-in multi-band antenna

• US 7,072,690 B2
• Filed: 12/06/2002
• Issued: 07/04/2006
• Est. Priority Date: 04/11/2001
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Shin, Hyo Sik, Bang, Kwang Seog, Kim, Eung Bok
• Primary Examiner(s): Milord, Marceau
• Application Number:
  US10/310,980
• Publication Number:
  US 20030124985A1
• Time in Patent Office: 1,306 Days
• Field of Search: 455/575.1, 455/575.8, 455/557, 455/575.7, 455/556.1, 455/556.2, 455/575.6, 455/575.3
• US Class Current: 455/557
• CPC Class Codes: G06F 1/1616 with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
• CPC Class Codes: G06F 1/1637 Details related to the display arrangement, including those related to the mounting of the display in the housing
• CPC Class Codes: G06F 1/1698 the I/O peripheral being a sending/receiving arrangement to establish a cordless communication link, e.g. radio or infrared link, integrated cellular phone details of antennas disposed inside a computer H01Q1/2266
• CPC Class Codes: H01Q 1/2266 disposed inside the computer

Abstract

A multi-band antenna and a notebook computer with a built-in multi-band antenna are disclosed. Since the multi-band antenna is installed at the inner side of a upper and a lower case, it is much favored for a radio communication when a computer is in use by standing up a display device. The multi-band antenna includes at least two transmitting and receiving parts formed with different lengths to fit frequency bands, so that a remote communication of at least two or more bands can be made. The multi-band antenna is positioned between liquid crystal and a side wall of the lower case, and a grounding unit is installed to contact a liquid crystal frame. That is, since the grounding unit is grounded to the liquid crystal frame and the bracket, substantially, the liquid crystal frame and the bracket are wholly grounded to ensure a stable radio frequency communication.

Claims

1. A multi-band antenna of a notebook computer in which a display device is coupled to cover a main body and has a display frame fixing a display and a bracket fixed at an outer side of the frame, comprising:

a grounding unit installed within the display device and between the frame and a case of the display device;

a grounding connection unit extended outwardly from a portion of the grounding unit;

an antenna line fixing unit extending outwardly from an outer portion of the grounding connection unit, wherein the grounding unit, the antenna line fixing unit and the grounding connection unit extending therebetween are each configured to extend in different two-dimensional planes; and

at least two or more transmitting and receiving units are configured to extend from the antenna line fixing unit to transmit and receive an electromagnetic wave.

2. The antenna of claim 1, wherein the connection unit, the antenna line fixing unit and the transmitting and receiving unit are integrally formed by bending a plate made of a conductive material to a ‘

U’

shape.

3. The antenna of claim 1, wherein the transmitting and receiving units include a first transmitting and receiving part connected to a vertical protrusion portion formed at one portion of the antenna line fixing unit and a second transmitting and receiving part installed side by side so as to be electrically connected to the first transmitting and receiving part.

4. The antenna of claim 3, wherein the second transmitting and receiving part is formed shorter than the first transmitting and receiving part.

5. The antenna of claim 3, wherein the second transmitting and receiving part is formed longer than the first transmitting and receiving part.

6. The antenna of claim 3, wherein the second transmitting and receiving part is formed connected to an extended protrusion portion formed at a certain portion of the first transmitting and receiving part.

7. The antenna of claim 3, wherein the second transmitting and receiving part is formed connected to an extended protrusion portion formed at a certain portion of the antenna line fixing unit.

8. The antenna of claim 3, wherein the second transmitting and receiving part is formed connected to the vertical protrusion portion.

18. The antenna of claim 1, wherein the connecting unit is configured to be bent substantially perpendicular to and extended from a respective edge of each of the grounding unit and the antenna line fixing unit to connect the grounding unit and the antenna line fixing unit.

19. The antenna of claim 1, wherein the grounding unit and the antenna line fixing unit are configured to extend in substantially parallel two-dimensional planes.

9. A notebook computer with a built-in multi-band antenna comprising:

a main body having a PCB therein that is connected to a radio communication device, and a keyboard positioned at an upper surface;

a display device rotatably installed on the main body, the display device comprising

a lower case having a bottom and a side wall; and

a display unit mounted at the lower case and having a frame installed at an outer circumference; and

a multi-band antenna having a grounding unit and at least two or more transmitting and receiving units with different lengths, and being installed between the frame and the side wall of the lower case as the grounding unit is coupled to the frame, wherein the grounding unit and an antenna line fixing unit connected to the two or more transmitting and receiving units are each configured to extend in different two-dimensional planes.

10. The notebook computer of claim 9, wherein the multi-band antenna is installed at left and right sides of the display device.

11. The notebook computer of claim 9, further comprising:

a bracket having a connection portion of which one side is fixed at the side of the frame and the other side is fixed at a side wall of the lower case, the grounding unit being positioned between the frame and the bracket.

12. The notebook computer of claim 9, wherein a screw fixing hole is formed at the side of a liquid crystal frame, a hole corresponding to the screw fixing hole is formed at the bracket and the grounding unit, and a screw penetrates the screw fixing hole, the bracket and the hole of the grounding unit to fix the bracket and the grounding unit to the liquid crystal frame.

13. The notebook computer of claim 9, further comprising:

a bracket having a connection portion of which one side is fixed at the side of the frame and the other side is fixed at a side wall of the lower case, the grounding unit being fixed at the bracket.

14. The notebook computer of claim 9, wherein the multi-band antenna comprises:

a grounding connection unit extended outwardly of a lower portion of the grounding unit and disposed at the lower side of the bracket;

the antenna line fixing unit formed at an outer portion of the grounding connection unit; and

a transmitting and receiving unit extended from an end of the antenna line fixing unit.

15. The notebook computer of claim 9, further comprises an antenna line of which one end is coupled to the transmitting and receiving unit and the other end is coupled to the radio communication device.

16. The notebook computer of claim 9, wherein the two or more transmitting and receiving units extend directly from the antenna line fixing unit, extend directly from an extension unit configured to project from the antenna line fixing unit, a first transmitting and receiving unit extends directly from the antenna line fixing unit and a second transmitting and receiving unit extends directly or indirectly from the first transmitting and receiving unit, or the first transmitting and receiving unit extends directly from the extension unit and the second transmitting and receiving unit extends directly or indirectly from the first transmitting and receiving unit.

17. The notebook computer of claim 16, wherein the two or more transmitting and receiving units are different lengths or extend in an identical two-dimensional plane.

20. A mobile electronic equipment with an internal antenna comprising:

a case having an opened portion;

a display panel exposed through the opened portion of the case for displaying text or images;

an electrically conductive support unit positioned within the case;

an antenna fastened to the support unit for enabling a radio communication, the antenna being grounded to the support unit in a state of being inserted in the case, wherein the antenna comprises,

a grounding unit in conductive contact to the support unit,

a antenna line fixing unit spaced at a distance from the grounding unit, and

a connecting unit coupled between the grounding unit and the antenna line fixing unit, wherein the connecting unit, the grounding unit and the antenna line fixing unit are configured to extend in different two-dimensional planes.

21. The equipment of claim 20, wherein the antenna comprises two or more transmitting and receiving units configured to extend from the antenna line fixing unit to transmit and receive an electromagnetic wave.

22. The equipment of claim 21, wherein the two or more transmitting and receiving units extend directly from the antenna line fixing unit, extend directly from an extension unit configured to project from the antenna line fixing unit, a first transmitting and receiving unit extends directly from the antenna line fixing unit and a second transmitting and receiving unit extends directly or indirectly from the first transmitting and receiving unit, or the first transmitting and receiving unit extends directly from the extension unit and the second transmitting and receiving unit extends directly or indirectly from the first transmitting and receiving unit.

23. The equipment of claim 22, wherein the two or more transmitting and receiving units are different lengths or extend in an identical two-dimensional plane.

24. The equipment of claim 21, wherein the connecting unit is configured to be bent substantially perpendicular to and extended from a respective edge of each of the grounding unit and the antenna line fixing unit to connect the grounding unit and the antenna line fixing unit.

25. The equipment of claim 20, wherein the grounding unit and the antenna line fixing portion are configured to extend in parallel two-dimensional planes.