JOSEPHSON FREQUENCY MULTIPLIER CIRCUIT

摘要

PURPOSE:To simplify the constitution by supplying an alternate signal current and an alternate bias current to an alternate pulse current generating circuit in a multiplier circuit using a Josephson junction circuit. CONSTITUTION:The alternate signal current A1 supplied to an alternate signal current input line 12 and the alternate bias current B applied to an alternate bias current input line 13 are applied to the alternate pulse current generating circuit U1. Thus, positive and negative alterate pulse currents P1-P4 having a time width tau until points of time TD1-TD4 delayed by a delay time tau of an alternate signal current delay circuit 27 are obtained respectively from points of time T1-T4 at each period of an alternate signal current A1 from an alternate pulse current output line 14. Since the output line 14 of alternate pulse current generating circuits U1-Un is coupled to an output line Hj via resistors Rj1-Rjn, an alternate pulse current PP where the frequency is multiplied by (n) is obtained to an alternate signal current A0 from the alternate signal source 1.