Chapter 7. Two-Port Networks

  1. Devendra K. Misra Ph.D.

Published Online: 25 MAR 2002

DOI: 10.1002/0471224359.ch7

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) Two-Port Networks, in Radio-Frequency and Microwave Communication Circuits: Analysis and Design, John Wiley & Sons, Inc., New York, USA. doi: 10.1002/0471224359.ch7

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:

  • impedance matrix;
  • admittance matrix;
  • chain matrix;
  • hybrid parameters;
  • scattering matrix;
  • chain scattering parameters

Summary

Electronic circuits are frequently needed for processing a given electrical signal to extract the desired information or characteristics. This includes boosting the strength of a weak signal or filtering out certain frequency bands and so forth. Most of these circuits can be modeled as a black box that contains a linear network comprising resistors, inductors, capacitors, and dependent sources. Thus, it may include electronic devices but not the independent sources. Further, it has four terminals, two for input and the other two for output of the signal. There may be a few more terminals to supply the bias voltage for electronic devices. However, these bias conditions are embedded in equivalent dependent sources. Hence, a large class of electronic circuits can be modeled as two-port networks. Parameters of the two-port completely describe its behavior in terms of voltage and current at each port. These parameters simplify the description of its operation when the two-port network is connected into a larger system. Some of these parameters and relations among them are presented in this chapter, including impedance parameters, admittance parameters, hybrid parameters, and transmission parameters. Scattering parameters are introduced later in the chapter to characterize the high frequency and microwave circuits.