Chapter 3. Transmission Lines

  1. Devendra K. Misra Ph.D.

Published Online: 25 MAR 2002

DOI: 10.1002/0471224359.ch3

Radio-Frequency and Microwave Communication Circuits: Analysis and Design

Radio-Frequency and Microwave Communication Circuits: Analysis and Design

How to Cite

Misra, D. K. (2001) Transmission Lines, in Radio-Frequency and Microwave Communication Circuits: Analysis and Design, John Wiley & Sons, Inc., New York, USA. doi: 10.1002/0471224359.ch3

Author Information

  1. Department of Electrical Engineering and Computer Science, University of Wisconsin–Milwaukee, Milwaukee, Wisconsin, USA

Publication History

  1. Published Online: 25 MAR 2002
  2. Published Print: 1 MAR 2001

ISBN Information

Print ISBN: 9780471412533

Online ISBN: 9780471224358

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Keywords:

  • transmission line equation;
  • characteristic impedance;
  • propagation constant;
  • attenuation constant;
  • phase constant;
  • phase and group velocities;
  • normalized input impedance;
  • reflection coefficient;
  • return loss;
  • insertion loss;
  • standing wave;
  • Smith chart

Summary

This chapter begins with an introduction to line parameters and a distributed model of the transmission line. Solutions to the transmission line equation are then constructed in order to understand the behavior of the propagating signal. This is followed by the concepts of sending end impedance, reflection coefficient, return loss, and insertion loss. A quarter-wave impedance transformer is also presented along with a few examples to match resistive loads. Impedance measurement via the voltage standing wave ratio is then discussed. Finally, the Smith chart is introduced to facilitate graphical analysis and design of transmission line circuits.