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US 8,274,370 B2Granted
Modulator and modulation method for a wireless data transmission device
AssigneeAtmel Corporation
InventorsUlrich Friedrich, Martin Fischer, Michael Pangels
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Abstract
In certain embodiments, an apparatus includes a rectifier and a switch. The rectifier is configured to modulate a received carrier signal. The switch is coupled to at least one node of the rectifier. The switch is configured to modify an impedance of the rectifier to modulate the received carrier signal by providing a potential to the at least one node of the rectifier based on a field strength of the received carrier signal and a modulation-control signal.
Claims23
An apparatus comprising:
- a rectifier configured to modulate a received carrier signal;
- and
- a switch coupled to at least one node of the rectifier, the switch being configured to modify an impedance of the rectifier to modulate the received carrier signal by providing a potential to the at least one node of the rectifier based on a field strength of the received carrier signal and
- a modulation-control signal.
1 more element
An apparatus comprising:
- means for receiving a carrier signal from a base station;
- means for modulating the received carrier signal;
- and
- means for modifying an impedance of a rectifier to modulate the received carrier signal by providing a potential to at least one node of the rectifier based on a field strength of the received carrier signal and a modulation-control signal.
1 more element
A method comprising:
- receiving a carrier signal from a base station;
- modulating the received carrier signal;
- and
- modifying an impedance of a rectifier to modulate the received carrier signal by providing a potential to at least one node of the rectifier based on a field strength of the received carrier signal and a modulation-control signal.
1 more element
Dependencies are inferred from the claim text.