Transmission-line Measurements

  • C. W. Davidson


Traditionally many transmission-line measurements have been based on steady-state sinusoidal excitation. In such measurements of standing-wave ratio or reflection coefficient a comparison is made between the transmitted wave and the sum of the reflected waves. However, in a system with more than one discontinuity it is not possible to discriminate between the various components of the reflected wave, so that it is difficult to interpret the results of the measurement.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    H. M. Barlow and A. L. Cullen, Microwave Measurements (Constable, London, 1950) p. 123.Google Scholar
  2. 2.
    R. A. Johnson, ‘Understanding Microwave Power Splitters’, Microwave Journal, 18, No. 12 (1975) p. 49.Google Scholar
  3. 3.
    R. Levy, ‘Directional Couplers’, in Advances in Microwaves (Academic Press, London, 1966).Google Scholar
  4. 4.
    S. Akhtarzad, et al., ‘The Design of Coupled Microstrip Lines’, I.E.E.E. Trans., MTT-23 (1975) p. 486.Google Scholar
  5. 5.
    M. Schwartz, Information Transmission, Modulation and Noise (McGraw-Hill, New York, 1970) p. 51.Google Scholar
  6. 6.
    H. W. Loeb, et al., ‘The Use of Time-domain Techniques for Microwave Transistor s-Parameter Measurements’, in: Proceedings of the Fifth European Microwave Conference (Hamburg, 1975).Google Scholar
  7. 7.
    C. A. Hoer, ‘The Six-port Coupler: a new approach to measuring voltage, current, power, impedance, and phase’, I.E.E.E. Trans., IM-21 (1972) p. 466.Google Scholar
  8. 8.
    G. F. Engen and C. A. Hoer, ‘Application of an Arbitrary Six-port Junction to Power Measurement Problems’, I.E.E.E. Trans., IM-21 (1972) p. 470.Google Scholar
  9. 9.
    G. F. Engen, ‘The Six-port Reflectometer: an alternative network analyser’, I.E.E.E. Trans., MTT-25 (1977) p. 1075.Google Scholar
  10. 10.
    C. A. Hoer, ‘A Network Analyser Incorporating Two Six-port Reflectometers’, I.E.E.E. Trans., MTT-25 (1977) p. 1070.Google Scholar
  11. 11.
    C. A. Hoer, ‘Performance of a Dual Six-port Automatic Network Analyser’, I.E.E.E. Trans., MTT-17 (1979) p. 993.Google Scholar
  12. 12.
    E. R. B. Hansson and G. P. Riblet, ‘An Ideal Six-port Network Consisting of a Matched Reciprocal Lossless Five-port and a Perfect Directional Coupler’. I.E.E.E. Trans., MTT-31 (1983) p. 284.Google Scholar
  13. 13.
    A. L. Cullen and S. P. Yeo, ‘Six-port Reflectometer Theory for Symmetrical Five-port Junction with Directional Coupler’, I.E.E. Proc., 133-H (1986) p. 277.Google Scholar
  14. 14.
    P. I. Somlo and J. D. Hunter, Microwave Impedance Measurement (Peter Perigrinus, London, 1985) pp. 193–8.Google Scholar
  15. 15.
    A. L. Cullen, ‘Measurement of 2-port Devices by a Reflectometer System’, I.E.E. Proc., 129-H (1982) p. 333.Google Scholar

Copyright information

© C. W. Davidson 1989

Authors and Affiliations

  • C. W. Davidson
    • 1
  1. 1.Heriot-Watt UniversityUK

Personalised recommendations