Chapter 3. Transmission Lines

  1. Devendra K. Misra

Published Online: 25 AUG 2004

DOI: 10.1002/0471653764.ch3

Radio-Frequency and Microwave Communication Circuits: Analysis and Design, Second Edition

Radio-Frequency and Microwave Communication Circuits: Analysis and Design, Second Edition

How to Cite

Misra, D. K. (2004) Transmission Lines, in Radio-Frequency and Microwave Communication Circuits: Analysis and Design, Second Edition, John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/0471653764.ch3

Author Information

  1. University of Wisconsin-Milwaukee, USA

Publication History

  1. Published Online: 25 AUG 2004
  2. Published Print: 17 AUG 2004

ISBN Information

Print ISBN: 9780471478737

Online ISBN: 9780471653769

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Keywords:

  • distributed networks;
  • Helmholtz equation;
  • attenuation constant;
  • phase constant;
  • propagation constant;
  • sending end impedance;
  • reflection coefficient;
  • standing wave;
  • VSWR;
  • 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.