The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 21, 2025
Filed:
Aug. 21, 2023
Navjot Kaur Khaira, Kanata, CA;
Tejinder Singh, Kanata, CA;
Mehran Golcheshmeh, Waterloo, CA;
Raafat Rezk Mansour, Waterloo, CA;
Navjot Kaur Khaira, Kanata, CA;
Tejinder Singh, Kanata, CA;
Mehran Golcheshmeh, Waterloo, CA;
Raafat Rezk Mansour, Waterloo, CA;
Abstract
A magnetless cryogenic circulator is developed that has three identical resonators in three branches. Each branch connects two ports and each resonator has a capacitor connected across a tunable inductor. A set of tunable inductors modulated with modulation signals that have a relative phase of 0°, 120° and 240° provided through a circuit. A microstrip delay line for providing the modulation signal to the three resonators, wherein the resonators are modulated in time such that the degeneracy of the two inherent counter-rotating modes is lifted, achieving a non-reciprocal signal routing. All capacitors and inductors are monolithically integrated and fabricated using a multi-layer Nb-based process with Nb/AlOx/Nb JJs.