DOOR WITH INTEGRAL ANTENNA

• US 20090243859A1
• Filed: 05/21/2009
• Published: 10/01/2009
• Est. Priority Date: 07/25/2006
• Status: Active Grant

• Current Assignee: Sensormatic Electronics LLC (Johnson Controls International plc)
• Original Assignee: Sensormatic Electronics Corporation (Johnson Controls International plc)
• Inventors: CHIASSON, Denis, BERGMAN, Adam Scott
• Granted Patent: US 8,106,779 B2
• Time in Patent Office: Days
• US Class Current: 340/572.700
• CPC Class Codes: G06K 7/10316 using at least one antenna particularly designed for interrogating the wireless record carriers antennas in general H01Q1/22
• CPC Class Codes: H01Q 1/14 for wire or other non-rigid radiating elements
• CPC Class Codes: H01Q 1/2216 used in interrogator/reader equipment
• CPC Class Codes: H01Q 1/40 Radiating elements coated with or embedded in protective material
• 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 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: Y10T 29/49016 Antenna or wave energy "plumbing" making

Abstract

A door and method of constructing a door whereby a security system antenna is routed through channels that are incorporated within the outer perimeter of the door, and completely or partially hidden from sight. The channels are sized to retain at least a portion of the security system antenna therein. The door can be purchased with the antenna wires already embedded therein and hidden from sight and installed at a facility without the need to mount the antenna wires on a pedestal or dig up floors and/or walls to embed the antenna coils. Existing doors can be retrofitted to install the antenna wires. Such antennas may be used, for example, in an RFID marker system or a magneto-acoustic EAS marker system.

Claims

1. A method of constructing a door for a security system, the method comprising:

providing a door having an outer perimeter;

incorporating at least one channel around the outer perimeter of the door, the at least one channel being sized to retain a corresponding portion of the security system antenna; and

inserting the corresponding portion of the security system antenna within the at least one channel.

2. The method of claim 1, wherein the at least one channel retains a hollow cable assembly, and wherein the method further includes inserting the corresponding portion of the security system antenna within the hollow cable assembly.

3. The method of claim 1, wherein the door is comprised of metal.

4. The method of claim 3, wherein the door has a metal frame and an air gap between the metal frame and the corresponding portion of the security system antenna.

5. The method of claim 1, further comprising inserting a resonating capacitor board within a recessed area of the door, the resonating capacitor board being in electrical communication with the security system antenna.

6. The method of claim 1, wherein no portion of the security system antenna is visible.

7. The method of claim 1, wherein the security system is an EAS security system and the security system antenna is an EAS antenna.

8. The method of claim 1, wherein the security system is an RFID security system and the security system antenna is an RFID antenna.

9. The method of claim 1, wherein the door is comprised of wood.

10. A door for use with a security system, the door comprising:

an outer perimeter about an outer surface of the door;

a security system antenna; and

at least one channel in the outer perimeter, the at least one channel being sized to retain a corresponding portion of the security system antenna.

11. The door of claim 10, further including a hollow cable assembly positioned within the at least one channel, wherein the hollow cable assembly retains the corresponding portion of the security system antenna.

12. The door of claim 10, wherein the door is comprised of metal.

13. The door of claim 11, wherein the door further includes a metal frame and wherein the door comprises an air gap between the metal frame and the corresponding portion of security system antenna.

14. The door of claim 10, wherein the at least one channel is sized to retain a portion of a resonating capacitor board.

15. The door of claim 10, wherein no portion of the security system antenna is visible.

16. The door of claim 10, wherein the security system is an EAS security system and the security system antenna is an EAS antenna.

17. The door of claim 10, wherein the security system is an RFID security system and the security system antenna is an RFID antenna.

18. The door of claim 10, wherein the door is comprised of wood.

19. A security system comprising:

a door having an outer perimeter about an outer surface of the door;

an RFID tag security system antenna;

at least one channel in the outer perimeter, the at least one channel being sized to retain a corresponding portion of the RFID tag security system antenna; and

a resonating capacitor board in electrical communication with the RFID tag security system antenna.

20. The security system of claim 19, wherein the door further includes a recess, wherein the resonating capacitor board is located within the recess.