Method for the determination of electromagnetic impedances in th

Details Method for the determination of electromagnetic impedances in th Method for the determination of electromagnetic impedances in th

1992-12-08

1994-12-06

Snow, Walter E.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Distributive type parameters

G01R 2702

Patent

active

053714687

ABSTRACT:
An unknown impedance can be determined in an analytically exact way by measuring in succession the 3 complex transmission coefficients of a transmission path, in which a measurement cell with the unknown impedance or with one of two known impedances is inserted. This is a broad-band method which takes into account all mismatches of the transmission line and of the measurement cell. Dielectric and magnetic material parameters can be determined via these impedance measurements.

REFERENCES:
patent: 4982164 (1991-01-01), Schiek et al.
K. Kupfmuller, Einfuhrung in die theoretische Elektrotechnik, Springer, 11th Ed., 1984, Chapter 5 (no translation).
J. R. Macdonald, Impedance Spectroscopy, J. Wiley & Sons, 1987, 1st Edition, Chapter 3.
A Generalized Theory and New Calibration Procedures for Network Analyzer Self-Calibration, H. J. Eul and B. Schiek, IEEE Transactions on Microwave Theory & Techniques, vol. 39, No. 4, Apr. 1991.
A. Rost, Messung dielektrischer Stoffeigenschaften, Vieweg, 1978, 1. Edition, Chapter 4.3 (no translation).
N.--E. Belhadj-Tahar, These de doctorat de l'Universite Pierre et Marie Curie, Paris IV, 1986 (no translation).
H. Freitag, Einfuhrung in die Zweitortheorie, Teubner Studienskripten, 1984, 3rd Edition, Chapter 12, p. 149 (no translation).
S. F. Adam, Microwave Theory and Applications, Prentice-Hall, Inc., 1969, 1st Edition, Chapter 2.2, p. 42.
Landau and Lifshitz, Electrodynamics of Continuous Media, Pergamon Press, 1960, 1st Edition, Chapter 7, p. 193.

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