Chapter 4. Multiport Circuit Parameters and Transmission Lines

  1. W. Alan Davis PhD1 and
  2. Krishna K. Agarwal PhD2

Published Online: 9 OCT 2001

DOI: 10.1002/0471200689.ch4

Radio Frequency Circuit Design

Radio Frequency Circuit Design

How to Cite

Davis, W. A. and Agarwal, K. K. (2001) Multiport Circuit Parameters and Transmission Lines, in Radio Frequency Circuit Design, John Wiley & Sons, Inc., New York, USA. doi: 10.1002/0471200689.ch4

Author Information

  1. 1

    University of Texas at Arlington

  2. 2

    Raytheon Systems Company

Publication History

  1. Published Online: 9 OCT 2001

Book Series:

  1. Wiley Series in Microwave and Optical Engineering

Book Series Editors:

  1. Kai Chang

Series Editor Information

  1. Texas A&M University

ISBN Information

Print ISBN: 9780471350521

Online ISBN: 9780471200680



  • multiport circuit;
  • transmission lines;
  • two-port parameters;
  • ABCD parameters;
  • image impedance;
  • telegrapher's equations;
  • equations;
  • Smith chart;
  • two-wire transmission line;
  • two parallel plate transmission line;
  • coaxial transmission line;
  • microstrip transmission line;
  • scattering parameters;
  • admittance matrix;
  • scattering matrix;
  • problems


This chapter gives five ways of describing a two-port circuit in terms of voltage and current. Networks are often cascaded together and it is useful to describe each network in such a way that the product of the matrices of each network would describe the total composite network. This chapter presents equations to accomplish this description. Commonly used transmission lines (two wire, two parallel plate, coaxial, and microstrip) are detailed. Scattering parameters are also described.