SUPERCONDUCTIVE APPLIANCE BASED ON MULTI-ELEMENT STRUCTURE FROM JOSEPHSON JUNCTIONS Russian patent published in 2013 - IPC H01L39/22 

FIELD: measurement equipment.

SUBSTANCE: superconductive appliance comprises the next main elements: a chip comprising a SKIF-structure and a matching circuit board designed to set an input electromagnetic signal into a resonant circuit of the SKIF-structure on the chip and output signal pickup with the help of a microstrip line and its transfer to an output coaxial slot. The SKIF-structure arranged inside the loop of input electromagnet signal setting has a high amplification ratio and high linearity of voltage response to a magnetic component of an electromagnet signal in the frequency band of 0.1-10 GHz and dimensions of Josephson junctions (JJ), which satisfy the condition, at which the operation mode is provided, characterised by Fraunhofer dependence of critical current from magnetic field penetrating the JJ.

EFFECT: higher amplification ratio and high linearity of voltage response at a magnetic component of an electromagnet signal of a superconductive appliance in a frequency band of 0,1-10 GHz, optimised isolation between an input and an output for prevention of input signal feedthrough to a device output, increased sensitivity of a device due to optimised communication along a magnetic field between an input line and a SKIF-structure, increased noise immunity of a device.

2 cl, 4 dwg