DEVICE FOR CONVERTING RADIOFREQUENCY ENERGY INTO DC CURRENT (RECTIFIER ANTENNA) AND CORRESPONDING SENSOR
First Claim
1. A conversion device for converting radio-frequency energy into DC current, the conversion device comprising:
- an input for receiving at least one radio-frequency signal;
an output generating a DC current capable of powering at least one load; and
at least two conversion stages each comprising;
a radio-frequency filtering module, connected to a first input node of said conversion stage, configured to filter one of said at least one radio-frequency signal;
a voltage shift module, connected between a second input node of said conversion stage, said radio-frequency filtering module and an intermediate node of said conversion stage, configured to shift a voltage present at said first input node to said intermediate node;
a voltage rectifier module, connected between said intermediate note, said second input node and an output node of said conversion stage, configured to rectify the voltage of said intermediate node and deliver a rectified voltage on said output node,wherein, for a first of the at least two conversion stages, said second input node is connected to a reference voltage and, for a higher one of the at least two conversion stages, said second input node is connected to the output node of a lower conversion stage, andthe DC current is generated on the output node of a last of the at least two conversion stages.
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Accused Products
Abstract
A device for converting radio-frequency energy into DC current, receiving at least one radio-frequency signal at input and generating at output a DC current capable of powering at least one load. The device has at least two conversion stages, each including: a radio-frequency filtering module, connected to a first input node of the conversion stage, configured to filter the radio-frequency signal; a voltage shift module, connected between a second input node of the conversion stage, the radio-frequency filtering module and an intermediate node of the conversion stage, configured to shift a voltage present at the first input node to the intermediate node; a voltage rectifier module, connected between the intermediate note, the second input node and an output node of the conversion stage, configured to rectify the voltage of the intermediate node and deliver a rectified voltage on the output node.
20 Citations
10 Claims
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1. A conversion device for converting radio-frequency energy into DC current, the conversion device comprising:
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an input for receiving at least one radio-frequency signal; an output generating a DC current capable of powering at least one load; and at least two conversion stages each comprising; a radio-frequency filtering module, connected to a first input node of said conversion stage, configured to filter one of said at least one radio-frequency signal; a voltage shift module, connected between a second input node of said conversion stage, said radio-frequency filtering module and an intermediate node of said conversion stage, configured to shift a voltage present at said first input node to said intermediate node; a voltage rectifier module, connected between said intermediate note, said second input node and an output node of said conversion stage, configured to rectify the voltage of said intermediate node and deliver a rectified voltage on said output node, wherein, for a first of the at least two conversion stages, said second input node is connected to a reference voltage and, for a higher one of the at least two conversion stages, said second input node is connected to the output node of a lower conversion stage, and the DC current is generated on the output node of a last of the at least two conversion stages. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A sensor comprising:
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a data collector; a data renderer, which renders data collected by the data collector; and a conversion device for converting radio-frequency energy into DC current the conversion device comprising; an input for receiving at least one radio-frequency signal; an output generating a DC current capable, which powers the sensor; and at least two conversion stages each comprising; a radio-frequency filtering module, connected to a first input node of said conversion stage, configured to filter one of said at least one radio-frequency signal; a voltage shift module, connected between a second input node of said conversion stage, said radio-frequency filtering module and an intermediate node of said conversion stage, configured to shift a voltage present at said first input node to said intermediate node; a voltage rectifier module, connected between said intermediate note, said second input node and an output node of said conversion stage, configured to rectify the voltage of said intermediate node and deliver a rectified voltage on said output node, wherein, for a first of the at least two conversion stages, said second input node is connected to a reference voltage and, for a higher one of the at least two conversion stages, said second input node is connected to the output node of a lower conversion stage, and the DC current is generated on the output node of a last of the at least two conversion stages.
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Specification