Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Distributive type parameters
Patent
1988-12-20
1990-07-24
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Distributive type parameters
324635, 324641, G01N 2200
Patent
active
049437780
ABSTRACT:
An instrument for measuring the high frequency characteristics of a sheet-like material comprising: a pair of opposed slits formed in a pair of opposed tube walls of a cavity resonator having an optional cross-sectional shape, said slits extending parallel to the tube axis and enabling a sheet-like material to be inserted such that it extends across said cavity resonator; a driving section disposed at one end of said cavity resonator and having a driving conductor for producing microwaves for driving said cavity resonator in the direction to form an electric field which is perpendicular to the tube wall surfaces formed with said pair of slits; a detecting section disposed at the other end of said cavity resonator and having a probe conductor for receiving said microwaves; and a controlling and calculating device for detecting the resonant frequency or attenuation of received microwaves and calculating the high frequency characteristics of the sample from the detection result.
REFERENCES:
patent: 3458808 (1969-07-01), Agdur
patent: 4781063 (1988-11-01), Osaki et al.
Dube et al.; "Determination of Dielectric Properties . . . "; J. Appl. Phys., vol. 44, No. 11 (Nov. 1973), pp. 4927-4929.
Ahluwalia et al.; "Microwave Test Chamber . . . ", J. Microwave Power 6(1), (1971), pp. 15-23.
Hanfling et al.; "Measurement of Dielectric Materials . . . "; IEEE Trans. on Microwave Theory and Techniques, vol. MTT 20, No. 3, Mar. 1972, pp. 233-235.
Eisenzopf Reinhard J.
Kanzaki Paper Manufacturing Co. Ltd.
Mueller Robert W.
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