High frequency impedance measuring apparatus using two bidirecti

Details High frequency impedance measuring apparatus using two bidirecti High frequency impedance measuring apparatus using two bidirecti

1986-07-31

1988-10-25

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 58R, 324 57R, 128734, 128804, G01R 2706, G01N 2200, A61B 505

Patent

active

047806613

ABSTRACT:
High frequency impedance measurements using a reflectometer measuring the impedance of a body disposed between two electrodes, by means of two bidirectional couplers connected by controlled variable attenuators to a mixer circuit determining the modulus and the phase of the coefficient of the reflection due to the load, independently of the power level of the generator.

REFERENCES:
patent: 2931900 (1960-04-01), Goodman
patent: 3248647 (1966-04-01), Eichaker
patent: 3986113 (1976-10-01), Vifian
patent: 4506209 (1985-03-01), Landt
I.E.E. Proceedings Section A a I, vol. 129, No. 6 Partie H, Dec. 1982, pp. 363-366, Old, Woking, Surrey, GB; M. A. Wood.

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