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:
Aug. 04, 2015
Filed:
Nov. 28, 2012
Patrick Longhini, San Diego, CA (US);
Visarath IN, Chula Vista, CA (US);
Anna Leese DE Escobar, Encinitas, CA (US);
Antonio Palacios, San Diego, CA (US);
Oleg Mukhanov, Putnam Valley, NY (US);
Patrick Longhini, San Diego, CA (US);
Visarath In, Chula Vista, CA (US);
Anna Leese de Escobar, Encinitas, CA (US);
Antonio Palacios, San Diego, CA (US);
Oleg Mukhanov, Putnam Valley, NY (US);
The United States of America, as Represented by the Secretary of the Navy, Washington, DC (US);
Abstract
An amplifier and method for improving linear response includes a plurality of N bi-SQUIDs. Each bi-SQUID has a non-uniform bi-SQUID parameter β, described by β=2πLIΦcan be defined for each bi-SQUIDs from i=1 to N, where Lis the loop inductance, iis the critical current, and Φis a flux quantum for each bi-SQUID. The non-uniform bi-SQUIDs can be connected in series or in parallel to establish a Superconducting Quantum Interference Filter (SQIF) array of bi-SQUIDs. Once connected, a mutual inductance between the connected bi-SQUIDs can be established. If the mutual inductance between connected bi-SQUIDs is accounted for, careful manipulation of the critical current or the loop size, or both, of each bi-SQUID can result in extremely uniform behavior (linear response) of the SQIF when considered as a whole, even though the behavior of the element bi-SQUIDs is non-uniform (different β, parameters).