RFID tags having a rectifier circuit including a dual-terminal rectifier device
AssigneeImpinj, Inc.
InventorRonald A. Oliver
Life of this patent
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Abstract
Apparatus and method for generating a rectified output signal in a RFID tag from first and second alternating signals. A dual-terminal rectifier device has first and second input terminals to which the first and second alternating signals are applied, and further has a gate configured to form a conductive channel to electrically couple the first and second input terminals to the output terminal in response to a gate voltage. The dual-terminal rectifier device is configured to rectify a combination of the alternating input signals applied to the input terminals of the semiconductor device to generate a rectified output signal at an output terminal.
Claims16
A method for generating a rectified output signal in a RFID tag, the method comprising:
- receiving first and second alternating signals;
- rectifying a combination of the first and second alternating input signals to generate the rectified output signal, wherein,
- the rectified output signal is generated from a dual-terminal rectifier device having first and second input terminals, an output terminal, and a gate configured to form a conductive channel to electrically couple the first and second input terminals to the output terminal in response to a gate voltage;
- rectifying the combination includes applying a first rectified signal to the first input terminal of the dual-terminal rectifier device and applying a second rectified signal to the second input terminal of the dual-terminal rectifier device;
- and
- applying the first and second rectified signals comprises rectifying an input signal through a dual-output diode having a first output coupled to the first input of the dual-terminal rectifier device and further having a second output coupled to the second input of the dual-terminal rectifier device.
A method for generating a rectified output signal in a RFID tag, the method comprising:
- receiving first and second alternating signals;
- and
- rectifying a combination of the first and second alternating signals to generate the rectified output signal, wherein,
- the rectified output signal is generated from a dual-terminal rectifier device having first and second input terminals, an output terminal, and a gate configured to form a conductive channel to electrically couple the first and second input terminals to the output terminal in response to a gate voltage;
- rectifying the combination includes applying a first rectified signal to the first input terminal of the dual-terminal rectifier device and applying a second rectified signal to the second input terminal of the dual-terminal rectifier device;
- and
- applying the first and second rectified signals comprises rectifying an input signal through a dual-source field effect transistor having a first source coupled to the first input terminal of the dual-terminal rectifier device and further having a second source coupled to the second input terminal of the dual-terminal rectifier device.
A method for generating a rectified output signal in a RFID tag, the method comprising:
- receiving first and second alternating signals;
- and
- rectifying a combination of the first and second alternating signals to generate the rectified output signal, wherein,
- the rectified output signal is generated from a dual-terminal rectifier device having first and second input terminals, an output terminal, and a gate configured to form a conductive channel to electrically couple the first and second input terminals to the output terminal in response to a gate voltage;
- rectifying the combination includes applying a first rectified signal to the first input terminal of the dual-terminal rectifier device and applying a second rectified signal to the second input terminal of the dual-terminal rectifier device;
- and
- applying the first and second rectified signals comprises rectifying an input signal through a first diode having an output coupled to the first input of the dual-terminal rectifier device and rectifying the input signal through a second diode having an output coupled to the second input of the dual-terminal rectifier device.
Dependencies are inferred from the claim text.