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EECS373
Design of Microprocessor-Based Systems
Put Your Title Here
Name1, Name2, Name3
{name1, name2, name3}@umich.edu
Introduction: Write some title for intro
Some other title format
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Problem Description: Describe the problem in a few words
DC not possible to generate from
headset
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Direct rectification incurs significant power
losses
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Active rectification requires supply/gate
drive voltages
Active rectifier
Proposed Solution: How did you solve the problem?
Some title
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Describe what you did. Add Pictures!
Communication & Sensors
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Hardware accelerated Soft-Modem on MCU
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Impact on Phone Battery: 200 mW
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Manchester encoded digital communication
8.82 kbps at 3.1x10-5 BER
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Building out the square-inch
sensor ecosystem
Conclusion
With the basics of powering external devices and communicating with them now in place, it will soon be possible to
plug a small circuit board into almost any existing mobile phone, power an external sensor (e.g. EKG, PulseOx,
etc.), bias it with a voltage, read its analog output back, perform some sophisticated filtering, and present an instant
result. In short, a parasitically-powered analog expansion interface for the mobile phone will enable many new
applications that are either impossible or infeasible with today’s technology.
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