Patent ID: 9588191
Date: 2017-03-07
CPC Classifications: G01R,H01L,H03K,Y10S

Claim:
1. A broadband linear flux-to-voltage converter, comprising: a superconducting quantum interference device (SQUID) comprising: at least two Josephson junctions, each being biased by a DC current bias above a respective critical current of each of the at least two Josephson junctions, connected to form an inductive loop, the inductive loop being adapted to couple to a magnetic flux external to the SQUID, the inductive loop being configured to produce a voltage across one of the at least two Josephson junctions, the voltage having a non-linear response to the magnetic flux; and at least one unbiased Josephson junction connected in parallel with the inductive loop, the at least one unbiased Josephson junction being configured to increase a linearity of the voltage in response to the magnetic flux as compared to the inductive loop absent the at least one unbiased Josephson junction; and an output port configured to convey a signal corresponding to the voltage.