Frequency modulated microwave in combination with a voltage dete

Details Frequency modulated microwave in combination with a voltage dete Frequency modulated microwave in combination with a voltage dete

1980-08-06

1983-01-11

Strecker, Gerard R.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

G01R 2704, G01N 2204

Patent

active

043684211

ABSTRACT:
The device for measuring the moisture content of a sheet-like sample consists of a microwave oscillator, microwave transmitter and microwave receiver. At least three horn transmitters are flanged via an attenuator, directional couplers and attenuators to a frequency modulated microwave oscillator, opposite each of the horn transmitters, which are fixed on a frame, a microwave receiver with detector is arranged on the same frame, and a reference detector is flanged, via an attenuator, to at least one of the directional couples. The microwave receivers can be arranged so that they can be moved on the frame.

REFERENCES:
patent: 3060421 (1962-10-01), Rideout
patent: 3155898 (1964-11-01), Chope
patent: 3498112 (1970-03-01), Howard
patent: 3501692 (1970-03-01), Kluck
patent: 3534260 (1970-10-01), Walker
patent: 3551806 (1970-12-01), Sasaki
patent: 3599089 (1971-08-01), Bugnolo
patent: 3810005 (1974-05-01), Bennion et al.
patent: 3913012 (1975-10-01), Kujath

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