Chapter 3. Impedance Matching

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

Published Online: 9 OCT 2001

DOI: 10.1002/0471200689.ch3

Book Title

Radio Frequency Circuit Design

Radio Frequency Circuit Design

Additional Information

How to Cite

Davis, W. A. and Agarwal, K. K. (2001) Impedance Matching, in Radio Frequency Circuit Design, John Wiley & Sons, Inc., New York, USA. doi: 10.1002/0471200689.ch3

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

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CHAPTER TOOLS

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Keywords:

  • impedance matching;
  • Q factor;
  • resonance;
  • bandwidth;
  • unloaded Q;
  • circuit;
  • transformation circuit;
  • tapped capacitor transformer;
  • parallel double-tuned transformer;
  • problems

Summary

A major part of RF design is matching one part of a circuit to another to provide maximum power transfer between the two parts. Even antenna design can be thought of as matching free space to a transmitter or receiver. This chapter describes a few techniques that can be used to match between two real impedance levels. Although some comments will be made relative to matching to a complex load, the emphasis will be on real impedance matching. This chapter discusses the circuit quality factor, Q. The Q factor will be used with some of the subsequent matching circuit designs. Also discussed are L circuit impedance, transformation circuits, tapped capacitor transformer, and parallel double-tuned transformer.

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