US 12,451,575 B2
Magnetless cryogenic circulator
Navjot Kaur Khaira, Kanata (CA); Tejinder Singh, Kanata (CA); Mehran Golcheshmeh, Waterloo (CA); and Raafat Rezk Mansour, Waterloo (CA)
Filed by Navjot Kaur Khaira, Kanata (CA); Tejinder Singh, Kanata (CA); Mehran Golcheshmeh, Waterloo (CA); and Raafat Rezk Mansour, Waterloo (CA)
Filed on Aug. 21, 2023, as Appl. No. 18/236,198.
Claims priority of provisional application 63/400,027, filed on Aug. 22, 2022.
Prior Publication US 2024/0372241 A1, Nov. 7, 2024
Int. Cl. H01P 1/397 (2006.01); G06N 10/40 (2022.01); H01P 1/387 (2006.01)
CPC H01P 1/387 (2013.01) [G06N 10/40 (2022.01); H01P 1/397 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A magnetless cryogenic circulator, comprising:
a. a plurality of resonators circularly connected through a set of branches, wherein each branch connects two ports, each resonator has a capacitor connected across a tunable inductor of a set of tunable inductors;
b. each of the tunable inductors modulated with modulation signals that have a relative phase with a predefined phase angle, provided through a circuit, and
c. a microstrip delay line providing the modulation signals to the plurality of resonators, wherein each resonator is modulated in time configured to lift a degeneracy of a two inherent counter-rotating modes, achieving a non-reciprocal signal routing.