Pulse or digital communications – Receivers – Angle modulation
Reexamination Certificate
2011-02-01
2011-02-01
Burd, Kevin M (Department: 2611)
Pulse or digital communications
Receivers
Angle modulation
Reexamination Certificate
active
07881409
ABSTRACT:
A demodulator, chip and method for digitally demodulating an FSK signal utilizing a digital data transfer protocol and a digital demodulator circuit have been developed. The data-rate approaches the carrier-frequency. The one application for this technique is in the magnetically powered wireless systems such as biomedical implants and radio frequency identification (RFID) tags with high data rates above 1 Mbps. The demodulator circuit extracts the serial data bit-stream and a constant-frequency clock from an FSK carrier signal in the 1˜20 MHZ range, which can power the wireless system as well. The digital demodulator circuit is implemented entirely with digital circuitry and is called a digital-FSK (DFSK) demodulator.
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Ghovanloo Maysam
Najafi Khalil
Brooks & Kushman P.C.
Burd Kevin M
The Regents of the University of Michigan
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