DEVICE FOR HARVESTING AND MANAGING WIRELESS ENERGY
First Claim
1. A device for harvesting and managing wireless energy comprising:
- a wireless receiver receiving a wireless radio-frequency (RF) signal and converting said wireless RF signal into an alternating-current (AC) voltage with input power;
a first rectifier connected with said wireless receiver, receiving said AC voltage and converting said AC voltage into a first direct-current (DC) voltage;
a first capacitor connected with said first rectifier and a load, receiving said first DC voltage and providing said first DC voltage for said load;
a voltage detection circuit having a first voltage value, and said voltage detection circuit is connected with said first capacitor and detects said first DC voltage;
a first electrical switch connected with said wireless receiver and said voltage detection circuit, and said first electrical switch is turned off, and when said first DC voltage is larger than said first voltage value, said voltage detection circuit turns on said first electrical switch;
a second rectifier connected with said wireless receiver through said first electrical switch, and when said first DC voltage is larger than said first voltage value, said second rectifier receives said AC voltage through said first electrical switch, and converts said AC voltage into a second DC voltage to share said input power received by said first rectifier; and
a second capacitor connected with said second rectifier and said second DC voltage charges said second capacitor.
1 Assignment
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Accused Products
Abstract
A device for harvesting and managing wireless energy includes a wireless receiver, a first rectifier, a first capacitor, a voltage detection circuit, a first electrical switch, a second rectifier and a second capacitor connected to each other. The wireless receiver receives a wireless RF signal and converts it into an AC voltage with an input power. The first rectifier receives the AC voltage, converts it into a first DC voltage and transmits the first DC voltage to a load. The voltage detection circuit has a threshold voltage value and detects the first DC voltage. When the first DC voltage is larger than the threshold voltage value, the voltage detection circuit turns on the first electrical switch and the second rectifier receives the AC voltage through the first electrical switch to share the input power received by the first rectifier, thereby achieving the high energy conversion efficiency.
29 Citations
10 Claims
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1. A device for harvesting and managing wireless energy comprising:
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a wireless receiver receiving a wireless radio-frequency (RF) signal and converting said wireless RF signal into an alternating-current (AC) voltage with input power; a first rectifier connected with said wireless receiver, receiving said AC voltage and converting said AC voltage into a first direct-current (DC) voltage; a first capacitor connected with said first rectifier and a load, receiving said first DC voltage and providing said first DC voltage for said load; a voltage detection circuit having a first voltage value, and said voltage detection circuit is connected with said first capacitor and detects said first DC voltage; a first electrical switch connected with said wireless receiver and said voltage detection circuit, and said first electrical switch is turned off, and when said first DC voltage is larger than said first voltage value, said voltage detection circuit turns on said first electrical switch; a second rectifier connected with said wireless receiver through said first electrical switch, and when said first DC voltage is larger than said first voltage value, said second rectifier receives said AC voltage through said first electrical switch, and converts said AC voltage into a second DC voltage to share said input power received by said first rectifier; and a second capacitor connected with said second rectifier and said second DC voltage charges said second capacitor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification