Electrical transmission or interconnection systems – Personnel safety or limit control features – Interlock
Patent
1991-07-23
1994-08-02
Callahan, Timothy P.
Electrical transmission or interconnection systems
Personnel safety or limit control features
Interlock
307541, 307245, 307277, 324248, 341133, H03K 338, H03K 1792, G01R 3302, H03M 100
Patent
active
053348842
ABSTRACT:
A three junction SQUID (superconducting quantum interference device) mixer circuit is disclosed wherein a nonlinear element such as a Josephson junction is coupled with a dc SQUID formed by two other nonlinear elements such as Josephson junctions and two input coils to provide a mixer circuit that can be employed for mixing two input magnetic flux signals. The mixer can be used for up-converting very low frequency signals, for minimizing and solving problems associated with quantum noise limitations, or for down-converting high frequency signals.
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Callahan Timothy P.
International Business Machines - Corporation
Phan Trong
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