Coaxial microwave asborption diagnostic

Details Coaxial microwave asborption diagnostic Coaxial microwave asborption diagnostic

1989-05-25

1991-02-05

Wieder, Kenneth

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Distributive type parameters

324632, 324641, G01R 2704, G01R 2726

Patent

active

049908588

ABSTRACT:
A coaxial microwave absorption diagnostic device comprises a hollow cylindrical outer layer conductor with a coaxially aligned conductor rod extending therethrough and a dielectric material which interconnects the outer layer to the conductor rod. The device is formed with a passageway which is directed perpendicular to the longitudinal axis of the device and which passed through the outer layer, the conductor rod and the dielectric material. As so formed, the passageway is positioned for receiving a sample holder, such as a small capillary tube holding a sample solution. A variable or fixed frequency oscillator is electrically connected to an input end of the conductor rod for sending microwave power through the device and a diode senses the output portion of this microwave power which has passed through the device. The absorbed power, i.e. the input microwave power less the output microwave power, is determined by a comparator and used to analyze the sample.

REFERENCES:
patent: 2404797 (1946-07-01), Hansen
patent: 4013950 (1977-03-01), Falls
patent: 4543823 (1985-10-01), Nagy
patent: 4626773 (1986-12-01), Kroeger
patent: 4651085 (1987-03-01), Sakurai
patent: 4866371 (1989-09-01), De

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