SUPERCONDUCTING-SEMICONDUCTING ELECTRONICS (SSE) FOR BROAD-BAND SQUIDAPPLICATIONS

Conventional Superconducting Quantum Interference Devices (SQUIDs) hav e been used since the middle of the 60s to measure magnetic and electr ical quantities. The critical point in using of the SQUIDs was a small value of the flux-to-voltage transfer coefficient. It required using of matching transformer and lock-in technique to receive a noiseless a mplification. To increase the transform coefficient several new design of SQUID,, were offered in the last decade. In this report the new SQ UIDs are described and a comparative analysis of their performance is given. Perspectives of wide-band devices based on the new SQUIDs and c ooled semiconductors elements are discussed. New fields of application of the superconducting-semiconducting elements are considered.