Integrated circuit with enhanced coupling

• US 7,119,693 B1
• Filed: 03/13/2002
• Issued: 10/10/2006
• Est. Priority Date: 03/13/2002
• Status: Expired due to Fees

• Current Assignee: Celis Semiconductor Corp.
• Original Assignee: Celis Semiconductor Corp.
• Inventors: Devilbiss, Alan D.
• Primary Examiner(s): Mullen, Thomas J
• Application Number:
  US10/099,012
• Time in Patent Office: 1,672 Days
• Field of Search: 340/572.7, 340/572.1, 340/572.5, 340/572.6, 343/741, 343/742, 343/878, 343/893, 343/895, 343/904
• US Class Current: 340/572.5
• CPC Class Codes: G06K 19/07756 the connection being non-galvanic, e.g. capacitive
• CPC Class Codes: G06K 7/0008 General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
• CPC Class Codes: G06K 7/10178 including auxiliary means for focusing, repeating or boosting the electromagnetic interrogation field comparable booster antennas integrated on the record carrier itself G06K19/07794
• CPC Class Codes: G08B 13/2414 using inductive tags
• CPC Class Codes: G08B 13/2417 having a radio frequency identification chip
• CPC Class Codes: G08B 13/2448 Tag with at least dual detection means, e.g. combined inductive and ferromagnetic tags, dual frequencies within a single technology, tampering detection or signalling means on the tag

Abstract

A system for conveying a radio frequency (RF) signal from a base station to a detached integrated circuit (IC) has an intermediate resonant circuit and an IC. The intermediate resonant circuit is configured to resonate in response to the RF signal from the base station, reproducing the RF signal. The IC has an integral resonant circuit configured to resonate in response to the reproduced RF signal. The IC and the intermediate resonant circuit are affixed proximate each other. Both are separate from the base station and each other. Either or both of the intermediate resonant circuit and the integral resonant circuit may contact a high magnetic permeability layer. The intermediate resonant circuit may be formed of conductive ink.

Claims

1. A system for conveying a radio frequency (RF) signal to an integrated circuit, the system comprising:

(a) an intermediate resonant circuit configured to resonate in response to an RF signal, reproducing the RF signal, the intermediate resonant circuit including an inductive antenna element, a capacitive element, and a high magnetic permeability layer contacting the inductive antenna element; and

,

(b) an integrated circuit (IC) affixed proximate the intermediate resonant circuit, the IC separate from the intermediate resonant circuit, the IC having an integral resonant circuit configured to resonate in response to the reproduced RF signal.

2. The system of claim 1 wherein the intermediate resonant circuit is passive.

3. The system of claim 1 wherein the intermediate resonant circuit includes at least one circuit component formed of conductive ink.

4. The system of claim 1 wherein the integral resonant circuit is passive.

5. The system of claim 1 wherein the integral resonant circuit includes an inductive antenna element and a capacitive element.

6. The system of claim 5 wherein the integral resonant circuit further includes a high magnetic permeability layer contacting the inductive antenna element.

7. A system for conveying a radio frequency (RF) signal to an integrated circuit, the system comprising:

(a) an integrated circuit (IC) having an integral resonant circuit configured to resonate in response to an RF signal and provide the RF signal to the IC; and

,

(b) an intermediate resonant circuit affixed proximate the integral resonant circuit external to and separate from the IC, the intermediate resonant circuit configured to resonate in response to an RF signal, reproducing the RF signal, the intermediate resonant circuit including an inductive antenna element, a capacitive element, and a high magnetic permeability layer contacting the inductive antenna element.

8. The system of claim 7 wherein the intermediate resonant circuit is passive.

9. The system of claim 7 wherein the intermediate resonant circuit includes at least one circuit component formed of conductive ink.

10. The system of claim 7 wherein the integral resonant circuit is passive.

11. The system of claim 7 wherein the integral resonant circuit includes an inductive antenna element and a capacitive element.

12. The system of claim 11 wherein the integral resonant circuit further includes a high magnetic permeability layer contacting the inductive antenna element.

13. A system for conveying a radio frequency (RF) signal from a base station to a detached integrated circuit the system comprising:

(a) an intermediate resonant circuit configured to resonate in response to an RF signal from the base station, reproducing the RF signal, the intermediate resonant circuit including an inductive antenna element, a capacitive element, and a high magnetic permeability layer contacting the inductive antenna element; and

,

(b) an integrated circuit (IC) affixed proximate the intermediate resonant circuit, the IC separate from the intermediate resonant circuit and the base station, the IC having an integral resonant circuit configured to resonate in response to the reproduced RF signal.

14. The system of claim 13 wherein the intermediate resonant circuit is passive.

15. The system of claim 13 wherein the intermediate resonant circuit includes at least one circuit component formed of conductive ink.

16. The system of claim 13 wherein the integral resonant circuit is passive.

17. The system of claim 13 wherein the integral resonant circuit includes an inductive antenna element and a capacitive element.

18. The system of claim 17 wherein the integral resonant circuit further includes a high permeability layer contacting the inductive antenna element.

19. A system for conveying a radio frequency (RF) signal to an integrated circuit, the system comprising:

(a) an intermediate resonant circuit configured to resonate in response to an RF signal, reproducing the RF signal, the intermediate resonant circuit including at least one circuit component formed of conductive ink; and

,

(b) an integrated circuit (IC) affixed proximate the intermediate resonant circuit, the IC separate from the intermediate resonant circuit, the IC having an integral resonant circuit configured to resonate in response to the reproduced RF signal.

20. The system of claim 19 wherein the intermediate resonant circuit is passive.

21. The system of claim 19 wherein the intermediate resonant circuit includes an inductive antenna element and a capacitive element.

22. The system of claim 19 wherein the integral resonant circuit is passive.

23. The system of claim 19 wherein the integral resonant circuit includes an inductive antenna element and a capacitive element.

24. The system of claim 23 wherein the integral resonant circuit further includes a high magnetic permeability layer contacting the inductive antenna element.

25. A system for conveying a radio frequency (RF) signal to an integrated circuit, the system comprising:

(a) an integrated circuit (IC) having an integral resonant circuit configured to resonate in response to an RF signal and provide the RF signal to the IC; and

,

(b) an intermediate resonant circuit affixed proximate the integral resonant circuit external to and separate from the IC, the intermediate resonant circuit configured to resonate in response to an RF signal, reproducing the RF signal, the intermediate resonant circuit including at least one circuit component formed of conductive ink.

26. The system of claim 25 wherein the intermediate resonant circuit is passive.

27. The system of claim 25 wherein the intermediate resonant circuit includes an inductive antenna element and a capacitive element.

28. The system of claim 25 wherein the integral resonant circuit is passive.

29. The system of claim 25 wherein the integral resonant circuit includes an inductive antenna element and a capacitive element.

30. The system of claim 29 wherein the integral resonant circuit further includes a high magnetic permeability layer contacting the inductive antenna element.

31. A system for conveying a radio frequency (RF) signal from a base station to a detached integrated circuit, the system comprising:

(a) an intermediate resonant circuit configured to resonate in response to an RF signal from the base station, reproducing the RF signal, the intermediate resonant circuit including at least one circuit component formed of conductive ink; and

,

(b) an integrated circuit (IC) affixed proximate the intermediate resonant circuit, the IC separate from the intermediate resonant circuit and the base station, the IC having an integral resonant circuit configured to resonate in response to the reproduced RF signal.

32. The system of claim 31 wherein the intermediate resonant circuit is passive.

33. The system of claim 31 wherein the intermediate resonant circuit includes an inductive antenna element and a capacitive element.

34. The system of claim 31 wherein the integral resonant circuit is passive.

35. The system of claim 31 wherein the integral resonant circuit includes an inductive antenna element and a capacitive element.

36. The system of claim 35 wherein the integral resonant circuit further includes a high magnetic permeability layer contacting the inductive antenna element.

37. A system for conveying a radio frequency (RF) signal to an integrated circuit, the system comprising:

(a) an intermediate resonant circuit configured to resonate in response to an RF signal, reproducing the RF signal; and

,

(b) an integrated circuit (IC) affixed proximate the intermediate resonant circuit, the IC separate from the intermediate resonant circuit, the IC having an integral resonant circuit configured to resonate in response to the reproduced RF signal, the integral resonant circuit including an inductive antenna element, a capacitive element, and a high magnetic permeability layer contacting the inductive antenna element.

38. The system of claim 37 wherein the intermediate resonant circuit is passive.

39. The system of claim 37 wherein the intermediate resonant circuit includes an inductive antenna element and a capacitive element.

40. The system of claim 37 wherein the integral resonant circuit is passive.

41. A system for conveying a radio frequency (RF) signal to an integrated circuit, the system comprising:

(a) an integrated circuit (IC) having an integral resonant circuit configured to resonate in response to an RF signal and provide the RF signal to the IC, the integral resonant circuit including an inductive antenna element, a capacitive element, and a high magnetic permeability layer contacting the inductive antenna element; and

,

(b) an intermediate resonant circuit affixed proximate the integral resonant circuit external to and separate from the IC, the intermediate resonant circuit configured to resonate in response to an RE signal, reproducing the RF signal.

42. The system of claim 41 wherein the intermediate resonant circuit is passive.

43. The system of claim 41 wherein the intermediate resonant circuit includes an inductive antenna element and a capacitive element.

44. The system of claim 41 wherein the integral resonant circuit is passive.

45. A system for conveying a radio frequency (RF) signal from a base station to a detached integrated circuit, the system comprising:

(a) an intermediate resonant circuit configured to resonate in response to an RF signal from the base station, reproducing the RF signal; and

,

(b) an integrated circuit (IC) affixed proximate the intermediate resonant circuit, the IC separate from the intermediate resonant circuit and the base station, the IC having an integral resonant circuit configured to resonate in response to the reproduced RF signal, the integral resonant circuit including an inductive antenna element, a capacitive element, and a high magnetic permeability layer contacting the inductive antenna element.

46. The system of claim 45 wherein the intermediate resonant circuit is passive.

47. The system of claim 45 wherein the intermediate resonant circuit includes an inductive antenna element and a capacitive element.

48. The system of claim 45 wherein the integral resonant circuit is passive.