Apparatus and method for measuring electric characteristics of m

Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Distributive type parameters

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324639, 324642, 73159, G01R 2704, G01N 2200

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active

050014331

ABSTRACT:
Apparatus and method for measuring electric characteristics of sheet-like materials using an instrument which includes a waveguide tube member having one end connected to transmitter for introducing a microwave into the tube member and the other end fully opened, a waveguide terminal member having an opened end facing the opened end of the tube member to form slit of the whole wave guide body constituted from the tube and terminal members and having the other end connected to first microwave detector, and an auxiliary waveguide branching from the wall portion of said tube member adjacent to the slit with the branch-extension end being associated with a second microwave detector.

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patent: 4710700 (1987-12-01), Osaki
patent: 4781063 (1988-11-01), Osaki et al.
patent: 4789820 (1988-12-01), Parrent
patent: 4841223 (1989-06-01), Baum

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