ELECTRONIC DEVICE REDUCING INFLUENCE OF SYSTEM NOISE ON SENSITIVITY OF ATENNA

• US 20080078575A1
• Filed: 02/09/2007
• Published: 04/03/2008
• Est. Priority Date: 10/02/2006
• Status: Active Grant

• Current Assignee: Compal Electronics Incorporated
• Original Assignee: Compal Electronics Incorporated
• Inventors: Yu, Jen-Huan
• Granted Patent: US 7,435,916 B2
• Time in Patent Office: Days
• US Class Current: 174/377
• 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 1/1656 Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories mounting of accessories to a computer display G06F1/1607; display hoods G06F1/1603; cooling arrangements for portable computers G06F1/203
• CPC Class Codes: G06F 1/1683 for the transmission of signal or power between the different housings, e.g. details of wired or wireless communication, passage of cabling
• 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: H05K 9/0007 Casings standardised racks H05K9/0062
• CPC Class Codes: H05K 9/0088 comprising a plurality of shielding layers; combining different shielding material structure
• CPC Class Codes: H05K 9/0098 for shielding electrical cables

Abstract

An electronic device including a first housing, a second housing, a signal cable, an insulating layer and an antenna is provided. The second housing is connected to the first housing and has a housing shielding layer on its inner surface. The signal cable extends from inside the first housing into the second housing and has a cable shielding layer on its outer surface. The insulating layer is disposed between the housing shielding layer and the cable shielding layer so as to electrically insulate the housing shielding layer from the cable shielding layer. The antenna is disposed inside the second housing. The insulating layer prevents the housing shielding layer from contacting the cable shielding layer so that the influence of the system noise on the sensitivity of the antenna can be reduced.

Claims

1. An electronic device comprising:

a first housing;

a second housing, connected to the first housing with a housing shielding layer located on the inner surface of the second housing;

a signal cable, extended from inside the first housing into the second housing, and having a cable shielding layer located on the outer surface of the signal cable;

an insulating layer, disposed between the housing shielding layer and the cable shielding layer so as to electrically insulate the housing shielding layer from the cable shielding layer; and

an antenna, disposed inside the second housing.

2. The electronic device as claimed in claim 1, further comprising:

a mother board, disposed inside the first housing and coupled to one end of the signal cable located inside the first housing.

3. The electronic device as claimed in claim 2, wherein the mother board has a high frequency digital signal circuit layer and a reference plane, and the outer side of the high frequency digital signal circuit layer corresponding to the mother board is covered by the reference plane.

4. The electronic device as claimed in claim 3, wherein the reference plane is a ground plane or a power plane.

5. The electronic device as claimed in claim 1, further comprising:

a display module, disposed inside the second housing and coupled to one end of the signal cable located inside the second housing.

6. The electronic device as claimed in claim 1, wherein the second housing is pivoted to the first housing.

7. The electronic device as claimed in claim 1, wherein the housing shielding layer is coupled to a radio frequency grounding, and the cable shielding layer is coupled to a digital grounding.

8. The electronic device as claimed in claim 1, further comprising:

at least a conducting net, set inside the first housing so as to cover an opening of the first housing.

9. The electronic device as claimed in claim 8, wherein the conducting net is coupled to a digital grounding.

10. The electronic device as claimed in claim 8, wherein the conducting net is a metal net.

11. The electronic device as claimed in claim 1, further comprising:

at least a conducting cloth, set inside the first housing so as to cover an opening of the first housing.

12. The electronic device as claimed in claim 11, wherein the conducting cloth is coupled to a digital grounding.

13. The electronic device as claimed in claim 11, wherein the conducting cloth is a metal cloth.

14. The electronic device as claimed in claim 1, wherein the housing shielding layer is a metal layer.

15. The electronic device as claimed in claim 1, wherein the housing shielding layer is an aluminum layer.

16. The electronic device as claimed in claim 1, wherein the cable shielding layer is a metal layer.

17. The electronic device as claimed in claim 1, wherein the cable shielding layer is a metal net.