US 11,722,135 B2
Superconducting AC switch system
Aurelius L. Graninger, Sykesville, MD (US); Aaron A. Pesetski, Gambrills, MD (US); and Joel D. Strand, Ellicott City, MD (US)
Assigned to NORTHROP GRUMMAN SYSTEMS CORPORATION, Falls Church, VA (US)
Filed by Aurelius L. Graninger, Sykesville, MD (US); Aaron A. Pesetski, Gambrills, MD (US); and Joel D. Strand, Ellicott City, MD (US)
Filed on Jul. 14, 2021, as Appl. No. 17/375,210.
Prior Publication US 2023/0019017 A1, Jan. 19, 2023
Int. Cl. H03K 17/92 (2006.01); H01F 7/06 (2006.01)
CPC H03K 17/92 (2013.01) [H01F 7/064 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A superconducting AC switch system comprising:
a parellel switch network comprising a Josephson junction (JJ) coupled at a first end to an intermediate point in a transmission line having a transmission line impedance and at a second end to ground; and
a magnetic field generator that is configured to switch from inducing a magnetic field in a plane of the JJ, and providing no magnetic field in the plane of the JJ,
wherein an AC input signal applied at an input of the parallel switch network is passed through to an output of the parallel switch network in a first magnetic state, and the AC input signal applied at the input of the parallel switch network is substantially reflected back to the input of the parallel switch network in a second magnetic state,
wherein the first magnetic state is one of inducing a magnetic field in a plane of the JJ, and providing no magnetic field in the plane of the JJ, and the second magnetic state is the other of inducing a magnetic field in a plane of the JJ, and providing no magnetic field in the plane of the JJ.