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Externally Adjustable Delay Circuit for Use in Cryogenic Environment

IP.com Disclosure Number: IPCOM000068826D
Original Publication Date: 1978-Feb-01
Included in the Prior Art Database: 2005-Feb-20

Publishing Venue

IBM

Related People

Authors:
Wang, CP [+details]

Abstract

In many applications which utilize Josephson junction circuitry, variable delays are required. Because the circuits are immersed in a liquid helium environment, mechanically adjustable delays are next to impossible to achieve. The present article shows a circuit for obtaining such delays electronically using Josephson device in the same liquid helium environment. One application of such a circuit is in the precise measurement of the time it takes an input signal to traverse a selected path within a functional combinatorial network.