Integrated antenna for laptop applications

• US 20020190905A1
• Filed: 05/29/2001
• Published: 12/19/2002
• Est. Priority Date: 05/29/2001
• Status: Active Grant

• Current Assignee: Lenovo PC International Limited (Lenovo Group Ltd.)
• Original Assignee: International Business Machines Corporation
• Inventors: Liu, Duixian, Gaucher, Brian P., Flint, Ephraim B.
• Granted Patent: US 6,686,886 B2
• Time in Patent Office: Days
• US Class Current: 343/702
• CPC Class Codes: H01Q 1/2266 disposed inside the computer
• CPC Class Codes: H01Q 1/2275 associated to expansion card or bus, e.g. in PCMCIA, PC cards, Wireless USB
• 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 5/378 Combination of fed elements with parasitic elements
• 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: H01Q 9/42 with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Abstract

The present invention relates to an antenna for integration into a portable processing device. The antenna includes an electronic display metal support frame for grounding a conducting element, a pair of radiating elements extending from the display frame, and a means for conducting a dual-band signal comprising a first component for carrying a signal connected to the first and second radiating elements and a second component for grounding the conducting means connected to the display frame.

Claims

1. An antenna for integration into a portable processing device, comprising:

an electronic display metal support frame for grounding a conducting element;

a first and a second radiating element extending from the support frame; and

a conductor for conducting a signal comprising a first component for carrying a signal connected to the second radiating element and a second component for grounding the conducting means connected to the support frame.

2. The antenna of claim 1, wherein the first and second radiating elements are concentric with the first radiating element disposed within the second radiating element.

3. The antenna of claim 1, wherein the first radiating element is one of an inverted-L antenna and a slot antenna.

4. The antenna of claim 1, wherein the second radiating element is one of an inverted-F antenna and a slot antenna.

5. The antenna of claim 4, wherein an impedance match is achieved by positioning a feed conductor towards a midpoint of the length of the second radiating element for increasing impedance at a lower band and towards a closed end of the length for decreasing the impedance at the lower band.

6. The antenna of claim 1, wherein the means for conducting the signal is a coaxial cable having an inner feed conductor connected to the second radiating element and an outer conductor connected to the support frame.

7. The antenna of claim 1, wherein the first and second radiating elements are disposed substantially along a plane of the support frame.

8. The antenna of claim 1, wherein the first and second radiating elements are substantially transversely disposed on the support frame.

9. The antenna of claim 1, further comprising a duplexer connected to two communications systems and the dual-band antenna for transmitting at two bands simultaneously.

10. An integrated antenna arrangement comprising:

a conductive RF shielding foil disposed on the back of an electronic display having an integrated dual-band antenna; and

a feed portion extending partially across a hole forming a slot antenna.

11. The antenna arrangement of claim 10, further comprising means for conducting a signal comprising a first component for conducting the signal connected to the feed portion and a second component for grounding the conducting means connected to the RF foil opposite the feed portion.

12. The antenna arrangement of claim 11, wherein the means for conducting the signal is a coaxial cable having an inner conductor connected to the feed portion and an outer conductor connected to the RF foil opposite the feed portion.

13. The antenna arrangement of claim 10, wherein an impedance match is achieved by positioning a feed conductor towards a midpoint of the length of the antenna arrangement for increasing impedance and towards an end of the length for decreasing the impedance.

14. The antenna arrangement of claim 10, further comprising means for conducting a signal comprising a first component for conducting the signal connected to the feed portion and a second component for grounding the conducting means connected to the RF foil opposite the feed portion.

15. The antenna arrangement of claim 10, wherein the means for conducting the signal is a coaxial cable having an inner conductor connected to the feed portion and an outer conductor connected to the RF foil opposite the feed portion.

16. The antenna arrangement of claim 10, wherein an impedance match is achieved by positioning a feed conductor at an open end of the length of the antenna arrangement for increasing impedance and towards a closed end of the length for decreasing the impedance.