Passive Transmitter Receiver Device Fed by an Electromagnetic Wave

• US 20070252763A1
• Filed: 01/19/2005
• Published: 11/01/2007
• Est. Priority Date: 01/19/2004
• Status: Abandoned Application

• Current Assignee: Pygmalyon
• Original Assignee: Pygmalyon
• Inventors: Martin, Jean-Marc
• Application Number:
  US10/586,762
• Publication Number:
  US 20070252763A1
• Time in Patent Office: Days
• US Class Current: 343/702
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• CPC Class Codes: G06K 19/07758 arrangements for adhering the record carrier to further objects or living beings, functioning as an identification tag
• CPC Class Codes: H01Q 1/2225 used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
• CPC Class Codes: H01Q 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142
• 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

Abstract

The invention relates to a passive transmitter-receiver device (6,28,33) fed by an electromagnetic wave, provided with an antenna comprising a loop (7, 30, 34) which is associated with an electronic transponder chip (9), said loop being able to feed the electronic chip by an induced current which is generated when it is cross-flown by an electromagnetic wave (H1, H2, H3, Ha, Hr) carrying information, and to transmit a second electromagnetic wave carrying a response from the electronic chip. The antenna is configured in such a way that the loop includes at least two non-coplanar or non-parallel parts in a position of use.

Claims

1. A passive receiver-transmitter device fed by electromagnetic wave, provided with an antenna comprising a loop associated with an electronic transponder chip, this loop being able on the one hand to feed the electronic chip with an induced current generated when it is passed through by a first electromagnetic wave carrying information, and on the other hand, to send a second electromagnetic wave carrying the response from the electronic chip, characterized in that the antenna is designed in such a way that the loop comprises at least two non-coplanar or non-parallel parts in a position of use.

2. The device as claimed in claim 1, wherein the loop comprises at least two parts situated in roughly perpendicular planes.

3. The device as claimed in claim 2, wherein the loop is intended to be disposed in two planes roughly perpendicular to each other.

4. The device as claimed in claim 2, wherein the loop is intended to be positioned in three planes roughly perpendicular to each other.

5. The device as claimed in claim 1, wherein the antenna is incorporated in a support intended to be glued on several sides of an object.

6. The device as claimed in claim 5, wherein the support is produced in the form of a self-adhesive label.

7. The device as claimed in claim 1, wherein the antenna comprises a loop produced in the form of an open cylindrical bracelet, obtained from a flat support formed by a flexible strip.

8. The device as claimed in claim 1, wherein the antenna comprises a closed circular loop produced from a spiral-wound wire.

9. The device as claimed in claim 7, wherein the loop has a diameter of between 4 and 10 cm.

10. The device as claimed in claim 8, wherein the loop has a diameter of between 4 and 10 cm.

11. The device as claimed in claim 2, wherein the antenna is incorporated in a support intended to be glued on several sides of an object.

12. The device as claimed in claim 3, wherein the antenna is incorporated in a support intended to be glued on several sides of an object.

13. The device as claimed in claim 4, wherein the antenna is incorporated in a support intended to be glued on several sides of an object.