ELEC 320: Review for Final Exam
Fall, 1997
Prof. Rich Kozick

The final exam is on Monday, December 15, from 3:30 to 6:30 PM in room Dana 237 (our regular classroom). The exam will be closed-book and closed-notes, except that you can bring one sheet of 8.5 inch by 11 inch paper containing any notes that you would like. Important formulas and transform tables will be provided for you.

The following is a list of important concepts from the course. You should understand what each concept means, why it is important, and how to use it to solve problems.

• Analog filters (Lab 1 and other times during course):
  • Frequency response and Bode plot
  • Phasors and impedance
  • Amplitude gain, decibels (dB), and phase shift of a filter
  • 3 dB cutoff frequency of a filter
  • Filter types: low-, high-, band-pass, and band-stop
  • ``Order'' of a filter
• Signals and systems:
  • Continuous- versus discrete-time
  • Classifying systems as linear, time-invariant, and causal
  • Linear systems: understand the definition and how to apply it
  • Systems modeled by differential and difference equations
• Systems in the time-domain:
  • Impulse function and impulse response of a system
  • Convolution: why important, why true, how to compute
• Frequency analysis of signals and signal processing:
  • Fourier series: what it means, how to compute (using formulas), how to apply (periodic signal through a filter ...)
  • Amplitude and phase spectra of signals
  • Fourier transform: what it means, how to compute using tables of transform pairs and properties
  • Applications: Amplitude modulation, linear systems and frequency response, sampling theorem (minimum sampling rate, digital-to-analog conversion)
• Systems in the s-domain:
  • Laplace transform: use tables of transform pairs and properties to compute forward and inverse transforms (including partial fraction expansions)
  • Transfer function: definitions $H(s) = \frac{Y(s)}{X(s)} = {\cal L}\{ h(t) \}$
  • Poles and zeros of a system
  • Transfer function of systems in series, parallel, and ``feedback''
  • Relation between poles and zeros of H(s) and the frequency response of a filter