Extended range wireless charging and powering system

• US 8,421,408 B2
• Filed: 07/16/2010
• Issued: 04/16/2013
• Est. Priority Date: 01/23/2010
• Status: Expired due to Fees

• Current Assignee: Dae-Hee Park, Sooseok Oh, Sotoudeh Hamedi-Hagh
• Original Assignee: Dae-Hee Park, Sooseok Oh, Sotoudeh Hamedi-Hagh
• Inventors: Hamedi-Hagh, Sotoudeh, Oh, Sooseok, Park, Dae-Hee
• Primary Examiner(s): DIAO, M BAYE
• Application Number:
  US12/837,639
• Publication Number:
  US 20110181237A1
• Time in Patent Office: 1,005 Days
• Field of Search: 320/108, 307/104
• US Class Current: 320/108
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 50/50 using additional energy repeaters between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/00041 in response to measured battery parameters, e.g. voltage, current or temperature profile
• CPC Class Codes: H02J 7/00047 with provisions for charging different types of batteries

Abstract

Exemplary embodiments provide for an apparatus and a method for extended range wireless powering and charging of low-power electrical devices. The apparatus and method may comprise circuits and steps for receiving radio frequency energy; circuits and steps for resonating the radio frequency energy to increase the amplitude of the radio frequency energy; circuits and steps for retransmitting the resonated radio frequency energy; circuits and steps for receiving the retransmitted resonated radio frequency energy; and circuits and steps for converting the retransmitted resonated radio frequency energy into direct current for the extended range wireless powering and charging of low-power electrical devices.

Claims

1. A distributed resonance apparatus for extended range wireless powering and charging of a low-power electrical device comprising:

a receiving antenna for receiving radiated energy having at least one frequency in the radio frequency range;

an input port connected to the receiving antenna, the input port having a positive terminal and a negative terminal;

a first electrical leg comprising the positive terminal of the input port, the positive terminal connected in series to a first end of an inductor, a second end of the inductor connected in series to a first end of a resistor, a second end of the resistor connected in series to a positive terminal of an output port;

a second electrical leg comprising the negative terminal of the input port, an electrical ground, a negative terminal of an output port, and a capacitor connected in parallel between the ground and the positive terminal of the input port wherein the first electrical leg and the second electrical leg induce resonance in the at least one frequency in the radio frequency range; and

a transmitting antenna for wirelessly transmitting the resonated radio frequency energy.

2. The distributed resonance apparatus for extended range wireless powering and charging of a low-power electrical device of claim 1 wherein the at least one frequency in the radio frequency range is approximately 125 kHz.

3. The distributed resonance apparatus for extended range wireless powering and charging of a low-power electrical device of claim 1 wherein the at least one frequency in the radio frequency range is approximately 13.56 MHz.

4. The distributed resonance apparatus for extended range wireless powering and charging of a low-power electrical device of claim 1 wherein the at least one frequency in the radio frequency range is approximately 850 MHz.

5. The distributed resonance apparatus for extended range wireless powering and charging of a low-power electrical device of claim 1 wherein the at least one frequency in the radio frequency range is approximately 1900 MHz.

6. The distributed resonance apparatus for extended range wireless powering and charging of a low-power electrical device of claim 1 wherein the at least one frequency in the radio frequency range is approximately 2400 MHz.

7. The distributed resonance apparatus for extended range wireless powering and charging of a low-power electrical device of claim 1 wherein the at least one frequency in the radio frequency range is approximately 5000 MHz.

8. The distributed resonance apparatus for extended range wireless powering and charging of a low-power electrical device of claim 1 further comprising a radio frequency transmitting circuit for transmitting the radio frequency energy through an electro-magnetically coupled short distance.

9. The distributed resonance apparatus for extended range wireless powering and charging of a low-power electrical device of claim 1 further comprising an electro-magnetic strength detection circuit for determining the distance between the radio frequency transmitting circuit and a radio frequency energy receiving circuit.

10. The distributed resonance apparatus for extended range wireless powering and charging of a low-power electrical device of claim 1 further comprising

a circuit for receiving the retransmitted and resonated radio frequency energy;

a circuit for converting the retransmitted and resonated radio frequency energy into direct current; and

a circuit for delivering the direct current to a low-power electrical device.

11. The distributed resonance apparatus for extended range wireless powering and charging of a low-power electrical device of claim 10 wherein the circuit for converting the retransmitted and resonated radio frequency energy into direct current comprises a double-polarity receiver-multiplier device comprising a plurality of odd-order capacitors and a plurality of even-order capacitors and a plurality of rectifying diodes.

12. The distributed resonance apparatus for extended range wireless powering and charging of a low-power electrical device of claim 10 wherein the circuit for converting the retransmitted and resonated radio frequency energy into direct current comprises a plurality of odd-order capacitors and a plurality of even-order capacitors and a plurality of rectifying diodes for charging and powering of a low-power electrical device.

13. The distributed resonance apparatus for extended range wireless powering and charging of a low-power electrical device of claim 10 wherein the circuit for converting the retransmitted and resonated radio frequency energy into direct current comprises a plurality of odd-order capacitors and a plurality of even-order capacitors and a plurality of rectifying diodes for charging and powering of low-power electrical devices.