Apparatus for Determining Microwave Characteristics of Superconductive Materials Using a Resonant Cavity and Calibration Waveguides.
Patent, Filed 3 Aug 89, patented 25 Sep 90,
DEPARTMENT OF THE NAVY WASHINGTON DC
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Apparatus for determining the electrical characteristics of a superconductive material in a range of microwave frequencies and in a range of cryogenic temperatures has the material incorporated within a resonant cavity mounted on a a cold finger for maintaining the material at a predetermined temperature. A pair of test waveguides extended oppositely of the cavity and terminate in separable waveguide junctions for passage of microwave energy to measure the microwave characteristics of the cavity as affected by the enclosed in a vacuum chamber from which the cold finger extends for connection to controlled temperature cryogenic cooling equipment. The chamber also contains a plurality of calibration waveguides which extend parallel to the test waveguides, each calibration waveguide terminating oppositely in separable junctions. The chamber has plates disposed oppositely of the waveguides and movable transversely in relation to the waveguides without loss of vacuum. Keywords Patents. R.H.
- Test Facilities, Equipment and Methods
- Electrical and Electronic Equipment
- Solid State Physics