Multi-oscillator clock signals
AssigneeImpinj, Inc.
InventorsChristopher J. Diorio, Vadim Gutnik, Todd E. Humes
Life of this patent
Estimating the term…
Abstract
Methods and apparatus may operate to use multiple oscillators to generate a demodulator clock signal and a modulator clock signal within a radio-frequency identification (RFID) circuit. The demodulator clock signal may be generated from a radio-frequency signal received at the RFID circuit. A modulator clock signal may be generated using a calibration value stored in a non-volatile memory.
Claims24
A radio-frequency identification (RFID) circuit for use within an RFID tag, the circuit including:
- first clock generation circuitry to generate a modulator clock signal using a first oscillator within the RFID circuit, the modulator clock signal being generated utilizing a first calibration value stored within a non-volatile memory associated with the RFID tag;
- and
- second clock generation circuitry to generate a demodulator clock signal using a second oscillator within the RFID circuit, the demodulator clock signal being recovered from a radio-frequency signal received at the RFID tag.
A method of generating a demodulator clock signal and a modulator clock signal within a radio-frequency identification (REID) circuit for use within an REID tag, the method including:
- generating the modulator clock signal utilizing a first oscillator included in the REID circuit and a first calibration value stored within a non-volatile memory associated with the REID tag;
- and
- generating the demodulator clock signal from a radio-frequency signal received at the REID tag using a second oscillator included in the REID circuit.
A radio-frequency identification (RFID) circuit for use within an RFID tag, the circuit including:
- first means for generating a modulator clock signal using a first oscillator within the RFID circuit, the modulator clock signal being generated utilizing a first calibration value stored within a non-volatile memory associated with the RFID tag;
- and
- second means for generating a demodulator clock signal within the RFID circuit, the demodulator clock signal being recovered from a radio-frequency signal received at the RFID tag using a second oscillator included in the RFID circuit.
A computer-readable medium storing computer executable instructions comprising a behavioral level description of a radio-frequency identification (RFID) circuit for use in an RFID tag, the computer executable instructions including information to cause a simulator to model behavior of the RFID circuit, said RFID circuit comprising:
- first clock generation circuitry to generate a modulator clock signal using a first oscillator within the RFID circuit, the modulator clock signal being generated utilizing a first calibration value stored within a non-volatile memory associated with the RFID tag;
- and
- second clock generation circuitry to generate a demodulator clock signal within the RFID circuit, the demodulator clock signal being recovered from a radio-frequency signal received at the RFID tag using a second oscillator included in the REID circuit.
An apparatus, including:
- a radio-frequency identification (RFID) tag;
- and
- a circuit included in the RFID tag, the circuit including a first oscillator and first clock generation circuitry to generate a modulator clock signal within the circuit, the modulator clock signal being generated utilizing a first calibration value stored within a non-volatile memory included in the RFID tag, and second clock generation circuitry to generate a demodulator clock signal within the circuit, the demodulator clock signal being recovered from a radio-frequency signal received at the RFID tag using a second oscillator included in the circuit.
Dependencies are inferred from the claim text.