US 12,395,140 B2
Non-return to zero (NRZ) amplifier system
Elias J. Galan, Baltimore, MD (US); Andrew Hostetler Miklich, Columbia, MD (US); and Micah John Atman Stoutimore, Kensington, MD (US)
Assigned to NORTHROP GRUMMAN SYSTEMS CORPORATION, Falls Church, VA (US)
Filed by NORTHROP GRUMMAN SYSTEMS CORPORATION, Falls Church, VA (US)
Filed on Jul. 27, 2023, as Appl. No. 18/360,488.
Prior Publication US 2025/0038723 A1, Jan. 30, 2025
Int. Cl. H03F 19/00 (2006.01); G06N 10/00 (2022.01); H03K 19/195 (2006.01); H10N 60/12 (2023.01)
CPC H03F 19/00 (2013.01) [G06N 10/00 (2019.01); H03K 19/195 (2013.01); H10N 60/12 (2023.02)] 19 Claims
OG exemplary drawing
 
1. An amplifier system comprising:
an input configured to receive an input pulse;
a first input path coupled to the input and configured to provide the input pulse to a control node, wherein the first input path comprises at least one Josephson transmission line (JTL) stage;
a second input path coupled to the input and comprising at least one delay element to provide a delayed version of the input pulse to the control node, wherein the second input path comprises a plurality of JTL stages configured to provide a 180° phase-shift of the delayed version of the input pulse with respect to a period of a clock signal;
a first amplifier device comprising the control node and being configured to provide a control flux in response to the input pulse and in response to the delayed version of the input pulse; and
a second amplifier device coupled to the first amplifier device, the second amplifier device being set to a flux state in response to the control flux to provide an output voltage.