250 research outputs found
Design of a low-power analog circuit for an implantable RFID-enabled device with passive pressure sensor
Title from PDF of title page, viewed on Aug. 22, 2011Thesis advisor: Walter D. León-SalasVitaIncludes bibliographical references (p. 120-122)Thesis (M.S.)--School of Computing and Engineering. University of Missouri-Kansas City, 2011A low-power analog core for an implantable RFID-enabled pressure measurement system is
designed. The analog core includes the power generation block for the system, the clock
extractor for the digital core and the pressure sensor data converter. Circuit design constraints of
low-power consumption and small form factor were followed in the implementation of the
analog core. A new low-power analog-to-digital converter (ADC) for the pressure sensor is
designed. The designed data converter is implemented using charge-distribution technique which
consumes 90 µW of power and has a resolution of 12 bits making it suitable for such energy-constrained
applications. The designed ADC is targeted towards a commercially available
passive capacitive pressure sensor (microFab E1.3N). Cadence Virtuoso 6.1 Analog Design
Environment simulators are used to design, test and compare the schematic and post-layout
simulations of the components. The developed analog circuit will be a part of an implantable
RFID chip with passive sensors which can communicate with RFID readers.Introduction -- Background -- Design -- Results -- Concluding remarks and future work
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