Jan 28, 2023  
2021-2022 Undergraduate Academic Catalog 
2021-2022 Undergraduate Academic Catalog [ARCHIVED CATALOG]

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BE 3705 - Biomedical Electronics and Instrumentation

3 lecture hours 2 lab hours 4 credits
Course Description
This course focuses on the fundamental devices, circuitry, and techniques needed to acquire and process biomedical quantities and signals. Operating principals of semiconductor devices as well as their application are explained. The electrical characteristics of diodes, photodiodes, zener diodes, LED, and regulators and their applications are covered. Operational amplifiers are introduced and used in amplifier and filter circuits to process the signals. Non-ideal op amp properties, including finite gain, frequency response, stability, input and output resistances, bias currents and offset voltages, are treated in sufficient depth to permit design of high gain circuits capable of handling small DC and low frequency AC voltages.  (prereq: EE 3032 )
Course Learning Outcomes
Upon successful completion of this course, the student will be able to:
  • Utilize semiconductor theory to explain the behavior of diodes.
  • Utilize diodes as sensor, actuators, rectifiers and regulators
  • Utilize transducers in the measurement of physiological signals of medical interest
  • Design basic electronic circuitry using operational amplifiers to amplify the signals produced by resistive pressure, flow and displacement transducers
  • Design basic passive filters and 2nd order active filters to process signals
  • Predict the overall performance of cascaded processing modules
  • Design circuitry to generate periodic voltage or current waveforms
  • Assess the stability of feedback systems with respect to oscillation
  • Assess the effect of non-ideal operational amplifier properties on circuit performance

Prerequisites by Topic
  • AC, DC, and transient circuit analysis in the time domain
  • AC, DC, and transient circuit simulation using Pspice or Multisim
  • Laplace circuit analysis
  • Fourier analysis
  • Bode plots
  • Ability to conduct laboratory experiments using function generators, power supplies, multi-meters, and oscilloscopes

Course Topics
  • Semiconductor fundamentals
  • Diode fundamentals and applications
  • Amplification concepts using simple 3-element models: cascading and loading effects
  • Amplifier implementation using operational amplifiers: inverting, non-inverting, summing amplifiers
  • Difference amplifiers and fundamentals of instrumentation amplifiers
  • First and second order filters implemented with op amps, low pass, high pass, and band pass
  • Static non-ideal op amp characteristics: offset voltages and bias currents, finite gain and input and output resistances
  • Dynamic non-ideal op amp characteristics: finite bandwidth, frequency response, and slew rate
  • Stability of feedback amplifiers
  • Positive feedback, hysteresis, and relaxation oscillators

Laboratory Topics
  • Design and simulate circuits containing diodes and operational amplifiers
  • Introduction to amplifier concepts using dependent sources and a circuit simulation program
  • Design and implementation of basic amplifiers using op amps
  • Investigation of non-ideal operational amplifier characteristics
  • Linear, sinusoidal oscillator or relaxation oscillator design and implementation
  • Design and implementation of analog filters

Dr. Ahmed Sayed

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