A decoder using Josephson junction

A mesh-type decoder employing Josephson junctions is proposed. In this paper we describe two types of the decoder, one of them is constructed by using JTL and the other is CIL. The Josephson junctions in these decoders are directly coupled so as to immediately issue the gate current for the junction in the next stage when a signal is propagated from the previous stage. The principles of the operation are described and the simulations of 3 × 4 matrix decoders, of which each matrix element is denoted by Josephson junction, are illustrated in detail. The main advantages of these decoders are their simple construction and extremely high operating speed.