Apparatus and method for demodulation of a modulated...

Details Apparatus and method for demodulation of a modulated... Apparatus and method for demodulation of a modulated...

G - Physics

01

R

354/21

G01R 29/08 (2006.01)

Patent

CA 1172757

ABSTRACT OF THE DISCLOSURE A system for determining the modulation imposed on a curl-free magnetic vector potential field. The system includes apparatus for detecting the curl- free magnetic vector potential field component by means of a Josephson junction. The magnetic vector potential field interacts with the Josephson junction by var- ying the phase of the argument of the sine function which determines the Josephson junction current. The output signals of the Josephson junction are coupled to apparatus that can determine the modulation of the detected field. Because the magnitude of the change in the detected curl-free vector potential field causes a proportional change in the phase of the Josephson junction current, the modu- lation of the field can be established.

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