Electric power conversion systems – Current conversion – With voltage multiplication means
Reexamination Certificate
2006-02-14
2006-02-14
Nguyen, Matthew V. (Department: 2838)
Electric power conversion systems
Current conversion
With voltage multiplication means
C327S536000
Reexamination Certificate
active
06999327
ABSTRACT:
The present invention provides a passive RFID chip with on-chip charge pumps for generating electrical power for the chip from radio frequencies. The passive RFID chip comprises an analog portion and a digital portion. The analog portion primarily comprises a voltage sensor and an AM data detector. The digital portion comprises a state machine digital logic controller. Incoming RF signals enter the chip via external antennas. The RF signals are converted into regulated DC signals by RF-DC converters with the voltage sensor. The RF-DC converters provide power for all the on-chip components and hence the chip does not require external power supply. The incoming RF signals are demodulated by demodulators and enter the AM data detector where the envelope transitions are detected. A voltage alarm is provided to ensure the voltage level does not drop below an operational level of the chip. The logic signals and programming data are controlled by the state machine digital logic controller and the timing signals are provided by an on-chip oscillator.
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Smith Sterling
Yung Henry Tin-Hang
Bednarek Michael
MSTAR Semiconductor, Inc.
Nguyen Matthew V.
Pillsbury Winthrop Shaw & Pittman LLP
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