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Chapter 10 / 10.7

10.7 REVISION QUESTIONS

  1. Draw a diagram to show the relationship of current (I), electric field (E), and magnetic field (H) on a balanced transmission line.
  1. Explain why the velocity of propagation along a transmission line is less than the velocity of light in free space.
  1. What is meant by characteristic impedance (Z0)?
  1. Write an equation for VSWR. Briefly describe the range of values that can be taken by VSWR and discuss an acceptable level.
  1. List six desirable features of a transmission line.
  1. Differentiate between balanced and unbalanced transmission lines.
  1. Explain the construction and operating principles of coaxial cable.
  1. Outline the basic differences between microstrip, stripline, and waveguide transmission structures.
  1. Describe the propagation of electromagnetic energy in a rectangular metal waveguide.
  1. Describe the difference between step-index and graded-index optical fibers.
  1. What is meant by the acceptance angle of an optical fiber?
  1. Briefly describe the advantages and disadvantages of optical fibers compared with copper cables.