Back to results
US 9,177,243 B2Granted
Passive RFID transponder with powered element
AssigneeOverair Proximity Technologies Ltd.
InventorsQuoc Nam Do, Jonathan Jia Wei Chia
Life of this patent
Estimating the term…
Abstract
A passive RFID transponder circuit comprises a transducer antenna, a power conditioning unit and an RFID signal module coupled to the transducer antenna and an additional powered element coupled to the transducer antenna in parallel with the power conditioning unit and RFID signal module. The powered element is powered by electrical current from the transducer antenna that bypasses the power conditioning unit and RFID signal module.
Claims16
A passive RFID transponder circuit, comprising:
- a transducer antenna adapted to receive incoming RF signals and convert the incoming RF signals into electrical current, the transducer antenna further being adapted to receive a data-carrying electrical signal and convert the data-carrying electrical signal into an outgoing data-carrying RF signal;
- an RFID signal module coupled to the transducer antenna in an electrical circuit therewith;
- and
- a power conditioning unit interposed in the electrical circuit between the transducer antenna and the RFID signal module and configured to receive electrical current from the transducer antenna and deliver conditioned electrical current to the RFID signal module;
- the RFID signal module being arranged to receive the conditioned electrical current from the power conditioning unit and being adapted to respond to receiving the conditioned electrical current by transmitting the data-carrying electrical signal to the transducer antenna;
- and
- at least one powered element coupled to the transducer antenna in parallel with the RFID signal module and the power conditioning unit;
- wherein:
- the RFID transponder circuit is configured so that the at least one powered element receives electrical current from the transducer antenna to power the powered element;
- and
- flow of the electrical current from the transducer antenna to the at least one powered element to power the at least one powered element bypasses the RFID signal module and the power conditioning unit.
8 more elements
A method for powering a powered element, comprising:
- receiving an RF signal at a transducer antenna;
- the transducer antenna converting the RF signal to an electrical current;
- and
- directing the electrical current through a power conditioning unit coupled to the transducer antenna and then through an RFID signal module coupled to the transducer antenna and also directing the electrical current through at least one powered element coupled to the transducer antenna to power the at least one powered element;
- wherein:
- the at least one powered element is coupled to the transducer antenna in parallel with the power conditioning unit and the RFID signal module;
- flow of the electrical current from the transducer antenna to the at least one powered element to power the powered element bypasses the RFID signal module and the power conditioning unit;
- and
- the transducer antenna, the at least one powered element, the power conditioning unit and the RFID signal module all form part of a passive RFID transponder.
6 more elements
A method for indicating receipt of an RF signal by a passive RFID transponder;
- comprising:
- receiving an RF signal at a transducer antenna;
- the transducer antenna converting the RF signal to an electrical current;
- directing the electrical current through a power conditioning unit coupled to the transducer antenna and then through an RFID signal module coupled to the transducer antenna to generate a data-carrying electrical signal and deliver the data-carrying electrical signal to the transducer antenna;
- and
- directing the electrical current through at least one powered indicator coupled to the transducer antenna to power the at least one powered indicator to generate an indicator signal;
- wherein the electrical current through the power conditioning unit and the RFID signal module flows in parallel with the electrical current through the at least one powered indicator;
- and
- flow of the electrical current from the transducer antenna to the at least one powered indicator to power the at least one powered indicator bypasses the RFID signal module and the power conditioning unit.
6 more elements
Dependencies are inferred from the claim text.