RF energy harvesting circuit
First Claim
1. A voltage doubler rectifier RF power harvesting system comprising:
- a. at least one power harvesting module, wherein said power harvesting module comprises;
i. a voltage doubler rectifier structure circuit, wherein said voltage doubler rectifier structure comprises;
1. a DC voltage input;
2. a DC voltage output;
3. a signal input;
4. a first floating gate transistor and a second floating gate transistor, wherein said floating gate transistors are connected in series between said DC voltage input and said DC voltage output, wherein a gate control of said floating gate is connected to a drain of said transistor;
5. a first capacitor disposed between said input signal and said drain of said first floating gate transistor; and
6. a second capacitor disposed between a ground and said drain of said second floating gate transistor;
b. a harvester antenna, wherein said harvester antenna is disposed to provide a signal to said signal input;
c. a transmitter;
d. a transmitter antenna, wherein said transmitter provides said signal for output from said transmitter antenna, wherein a full-wave peak-to-peak voltage of an incoming RF signal from said transmitter antenna to said signal input is rectified; and
e. a powered device, wherein said powered device is connected to said DC voltage output to utilize said rectified signal.
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Abstract
A voltage doubler rectifier RF power harvesting system is provided having at least one power harvesting module with a voltage doubler rectifier that includes a DC voltage input and output, signal input, first and second floating gate transistors that are connected in series between the DC voltage input and output, and a gate control of the floating gate is connected to a drain of the transistor. The voltage double rectifier includes a first capacitor disposed between the input signal and the drain of the first floating gate transistor, and a second capacitor disposed between a ground and the drain of the second floating gate transistor. The system includes an input antenna and a transmitter with a transmitter antenna, where a full-wave peak-to-peak voltage of an incoming RF signal is rectified. The system also includes a powered device connected to the DC voltage output to utilize the rectified signal.
140 Citations
26 Claims
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1. A voltage doubler rectifier RF power harvesting system comprising:
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a. at least one power harvesting module, wherein said power harvesting module comprises; i. a voltage doubler rectifier structure circuit, wherein said voltage doubler rectifier structure comprises; 1. a DC voltage input; 2. a DC voltage output; 3. a signal input; 4. a first floating gate transistor and a second floating gate transistor, wherein said floating gate transistors are connected in series between said DC voltage input and said DC voltage output, wherein a gate control of said floating gate is connected to a drain of said transistor; 5. a first capacitor disposed between said input signal and said drain of said first floating gate transistor; and 6. a second capacitor disposed between a ground and said drain of said second floating gate transistor; b. a harvester antenna, wherein said harvester antenna is disposed to provide a signal to said signal input; c. a transmitter; d. a transmitter antenna, wherein said transmitter provides said signal for output from said transmitter antenna, wherein a full-wave peak-to-peak voltage of an incoming RF signal from said transmitter antenna to said signal input is rectified; and e. a powered device, wherein said powered device is connected to said DC voltage output to utilize said rectified signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 24, 25, 26)
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22. The RF power harvesting system of claim 22 wherein said antenna inner loop comprises a perimeter to match said input impedance of said rectifier.
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23. The RF power harvesting system of claim 23 wherein said antenna matching outer loops are disposed to divide said antenna into two identical parts as a virtual ground, wherein a fully differential signal is provided at said antenna ports.
Specification
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- Resources
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Current AssigneeOregon State University (Oregon University System)
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Original AssigneeOregon State University (Oregon University System)
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InventorsMayaram, Kartikeya, Flez, Terri S., Le, Triet Tu
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Application NumberUS12/218,761Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current307/110CPC Class CodesH02J 50/001 Energy harvesting or scaven...H02J 50/12 of the resonant typeH02J 50/20 using microwaves or radio f...H02J 50/80 involving the exchange of d...H02M 3/073 Charge pumps of the Schenke...
