After completing this section, students should be able to do the following.

  • Describe Smith chart as a polar plot of reflection coefficient.
  • Estimate the reflection coefficient from the Smith Chart.
  • Read the reflection coefficient off the Smith Chart
  • Mark the point on the Smith Chart given reflection coefficient.
  • Calculate load impedance if reflection coefficient and transmission-line impedance are given
  • Calculate reflection coefficient if load impedance and transmission-line impedance are given
  • Explain how was Smith Chart developed
  • Read normalized impedance and reflection coefficient on Smith Chart given a random point on the Smith Chart
  • Given impedance find the normalized position of the impedance on the Smith Chart.
  • Describe the reason for introducing admittance
  • Write impedance and admittance of an inductor and capacitor.
  • Explain why is the susceptance of an inductor negative and reactance is positive.
  • Explain why is the admittance Smith Chart rotated 180 degrees.
  • Distinguish between load impedance and normalized load impedance. Describe impedances on the Smith Chart as normalized impedances
  • Given impedance, read admittance on combo Y/Z chart
  • Given a random point on Y/Z chart, find admittance, impedance and the reflection coefficient.
  • Explain electrical length
  • Calculate the input impedance and input reflection coefficient
  • Describe input reflection coefficient in terms of load reflection coefficient.