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An inherently tuned antenna has a circuit for harvesting energy transmitted in space and includes portions that are structured to provide regenerative feedback into the antenna to produce an inherently tuned antenna which has an effective area substantially greater than its physical area. The inhere

An inherently tuned antenna has a circuit for harvesting energy transmitted in space and includes portions that are structured to provide regenerative feedback into the antenna to produce an inherently tuned antenna which has an effective area substantially greater than its physical area. The inherently tuned antenna includes inherent distributive inductive, inherent distributive capacitive and inherent distributive resistive elements which cause the antenna to resonate responsive to receipt of energy at a particular frequency and to provide feedback to regenerate the antenna. The circuit may be provided on an integrated circuit chip. An associated method is provided.

대표청구항 ▼

1. An energy harvesting circuit comprisingan inherently tuned antenna, and at least portions of said inherently tuned antenna structured to employ inherent distributed induction and inherent distributed capacitance to form a tank circuit to provide regenerative feedback into said antenna, whereby sa

1. An energy harvesting circuit comprisingan inherently tuned antenna, and at least portions of said inherently tuned antenna structured to employ inherent distributed induction and inherent distributed capacitance to form a tank circuit to provide regenerative feedback into said antenna, whereby said inherently tuned antenna will have an effective area substantially greater than its physical area. 2. The energy harvesting circuit of claim 1, includingsaid circuit being structured to produce said regenerative feedback through at least one of the group consisting of (a) a mismatch in impedance, (b) a showing of power generated by said inherently tuned antenna, (c) inductance, and (d) reflections due to said mismatch of impedance. 3. The energy harvesting circuit of claim 2, includingsaid circuit does not require discrete capacitors. 4. The energy harvesting circuit of claim 1, includingsaid antenna is an electrically conductive coil having predetermined width, height and conductivity. 5. The energy harvesting circuit of claim 4, includinga material of predetermined permitivity disposed adjacent to said conductive coil. 6. The energy harvesting circuit of claim 4, includingsaid conductive coil being a planar antenna, a substrate in which said conductive coil is constructed on one surface and a ground plane on an opposite surface, and said antenna having inherent distributed inductance and inherent distributed capacitance forming a tank circuit and inherent distributed resistance structured to regenerate said antenna. 7. The energy harvesting circuit of claim 6, includingsaid circuit is structured to provide at least a substantial portion of said inherent distributed capacitance between said conductive coil and said ground plane. 8. The energy harvesting circuit of claim 6, includingsaid circuit is structured to provide at least a substantial portion of said inherent distributed capacitance between segments of said conductive coil. 9. The energy harvesting circuit of claim 6, includingsaid circuit is structured to provide a portion of said inherent distributed capacitance between said conductive coil and said ground substrate, and a portion of said inherent distributed capacitance between segments of said conductive coil. 10. The energy harvesting circuit of claim 1, includingsaid circuit is structured to provide said regenerative feedback through a mismatch in impedance. 11. The energy harvesting circuit of claim 10, includingsaid circuit is structured to provide feedback due to standard wave reflection due to said mismatch in impedance. 12. The energy harvesting circuit of claim 1, includingsaid circuit is structured to provide said regenerative feedback through sharing of power generated by said inherently tuned antenna. 13. The energy harvesting circuit of claim 1, includingsaid circuit is structured to provide said regenerative feedback through inductance. 14. The energy harvesting circuit of claim 1, includingsaid circuit is a stand-alone circuit. 15. The energy harvesting circuit of claim 1, includingsaid circuit is formed on an integrated circuit electronic chip. 16. The energy harvesting circuit of claim 1, includingsaid inherently tuned antenna having an effective area greater than said antenna's physical area by about 1000 to 2000. 17. The energy harvesting circuit of claim 1, includingsaid tank circuit structured to regenerate said inherently tuned antenna. 18. The energy harvesting circuit of claim 1, includingsaid circuit being structured to receive RF energy. 19. The energy harvesting circuit of claim 1, includingsaid circuit having inherent distributed resistance which contributes to said feedback. 20. The energy harvesting circuit of claim 19, includingsaid circuit structure to employ parasitic capacitances. 21. An energy harvesting circuit comprisinga plurality of inherently tuned antennas with each said antenna having portions structured to provide regenerative feedback into the said antenna, each said inherently tuned antenna having a said circuit that employs inherent distributed inductance and inherent distributed capacitance to form a tank circuit, whereby said inherently tuned antennas will each have an effective area substantially greater than their respective physical areas. 22. The energy harvesting circuit of claim 21, includingsaid circuit being structured to produce said regenerative feedback through at least one of the group consisting of (a) a mismatch in impedance, (b) a sharing of power generated by said inherently tuned antenna, (c) inductance, and (d) reflections due to said mismatch of impedance. 23. The energy harvesting circuit of claim 22, includingeach said inherently tuned antenna having a circuit not requiring discrete capacitors. 24. The energy harvesting circuit of claim 22, includingeach said inherently tuned antenna having a tank circuit and an inherent resistance structured to regenerate said inherently tuned antenna. 25. The energy harvesting circuit of claim 21, includingeach said inherently tuned antenna having an electrically conductive coil having predetermined width, height and conductivity. 26. The energy harvesting circuit of claim 25, includingeach said inherently tuned antenna having a material of predetermined permitivity disposed adjacent to said conductive coil. 27. The energy harvesting circuit of claim 25, includingeach said inherently tuned antenna having a conductive coil being a planar antenna, a substrate in which said conductive coil is constructed on one surface and a ground plane on an opposite surface, and said antenna having inherent distributed inductance and inherent distributed capacitance forming a tank circuit and inherent resistance structured to regenerate said antenna. 28. The energy harvesting circuit of claim 27, includingeach said inherently tuned antenna having a circuit that is structured to provide at least a substantial portion of said inherent distributed capacitance between said conductive coil and said ground plane. 29. The energy harvesting circuit of claim 27, includingeach said inherently tuned antenna having a circuit that is structured to provide at least a substantial portion of said inherent distributed capacitance between segments of said conductive coil. 30. The energy harvesting circuit of claim 27, includingeach said inherently tuned antenna having a circuit that is structured to provide a portion of said inherent distributed capacitance between said conductive coil and said ground substrate, and a portion of said inherent distributed capacitance between segments of said conductive coil. 31. The energy harvesting circuit of claim 21, includingeach said inherently tuned antenna having a circuit that is structured to provide said regenerative feedback through a mismatch in impedance. 32. The energy harvesting circuit of claim 31, includingsaid circuit is structured to provide feedback due to standing wave reflection due to said mismatch in impedance. 33. The energy harvesting circuit of claim 21, includingeach said inherently tuned antenna having a circuit that is structured to provide said regenerative feedback through sharing of power generated by said inherently tuned antenna. 34. The energy harvesting circuit of claim 21, includingeach said inherently tuned antenna having a circuit that is structured to provide said regenerative feedback through inductance. 35. The energy harvesting circuit of claim 21, includingeach said inherently tuned antenna having a circuit that is a stand-alone circuit. 36. The energy harvesting circuit of claim 21, includingeach said inherently tuned antenna having a circuit that is formed on an integrated circuit electronic chip. 37. The energy harvesting circuit of claim 21, includingeach said inherently tuned antenna having an inherently tuned antenna having an effective area greater than said antenna's physical area by about 1000 to 2000. 38. The energy harvesting circuit of claim 21, includingsaid circuit being structured to receive RF energy. 39. The energy harvesting circuit of claim 21, includingsaid circuit having inherent distributed resistance which contributes to said feedback. 40. A method of energy harvesting comprisingproviding an inherently tuned antenna, and providing at least portions of said antenna structured to provide regenerative feedback into said antenna such that said inherently tuned antenna will have an effective area substantially greater than its physical area, employing in said circuit inherent distributed inductance and inherent distributed capacitance to form a tank circuit, delivering energy to said inherently tuned antenna through space, and providing a portion of the energy output of said inherently tuned antenna as regenerative feedback to said inherently tuned antenna to thereby establish in said antenna said effective area substantially greater than said physical area. 41. The method of energy recovery of claim 40, includingsaid circuit being structured to produce said regenerative feedback through at least one of the group consisting of (a) a mismatch in impedance, (b) a sharing of power generated by said inherently tuned antenna, (c) inductance, and (d) reflections due to said mismatch of impedance. 42. The method of energy recovery of claim 41, includingemploying a said circuit which does not require discrete capacitance. 43. The method of energy recovery of claim 41, includingemploying said tank circuit and said inherent resistance to regenerate said antenna. 44. The method of energy recovery of claim 40, includingemploying in said antenna an electrically conductive coil having predetermined width, height and conductivity. 45. The method of energy recovery of claim 44, includingemploying a material of predetermined permitivity disposed adjacent to said conductive coil. 46. The method of energy recovery of claim 44, includingemploying as said conductive coil a planar antenna, employing a substrate having said conductive coil on a first surface and a ground plane on an opposite surface, and employing as said antenna a circuit having inherent distributed inductance and inherently distributed capacitance forming a tank circuit and inherent distributed resistance to regenerate said antenna. 47. The method of energy recovery of claim 46, includingemploying at least a substantial portion of said inherent distributed capacitance between said conductive coil and said ground substrate. 48. The method of energy recovery of claim 46, includingemploying at least a substantial portion of said inherent distributed capacitance between segments of said conductive coil. 49. The method of energy recovery of claim 46, includingemploying a portion of said inherent distributed capacitance between said conductive coil and said ground substrate and a portion of said inherent distributed capacitance between segments of said conductive coil. 50. The method of energy recovery of claim 40, includingemploying a mismatch in impedance in said circuit to effect said regenerative feedback. 51. The method of energy recovery of claim 50, includingsaid circuit is structured to provide feedback due to standing wave reflection due to said mismatch in impedance. 52. The method of energy recovery of claim 40, includingemploying a sharing of power generated by said inherently tuned antenna to effect said regenerative feedback. 53. The method of energy recovery of claim 40, includingemploying inductance in said circuit to effect said regenerative feedback. 54. The method of energy recovery of claim 40, includingemploying a stand-alone circuit as said circuit. 55. The method of energy recovery of claim 40, includingemploying a circuit formed on an integrated circuit electronic chip as said circuit. 56. The method of energy recovery of claim 40, includingcreating said circuit with an effective antenna area about 1000 to 2000 times the physical area of said antenna. 57. The method of energy recovery of claim 40, includingsaid circuit having inherent distributed resistance which contributes to said feedback.