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:
Mar. 04, 1997
Filed:
May. 15, 1995
Jerald A Weiss, Wayland, MA (US);
Gerald F Dionne, Winchester, MA (US);
Massachusetts Institute of Technology, Cambridge, MA (US);
Abstract
In an apparatus and method for forming an advanced ring-network circulator, a plurality of junctions are interconnected by a plurality of non-reciprocal phase shifters. Each junction has a predetermined inductive reactance and capacitive susceptance which renders each junction partially reflective of an incident signal in a predetermined frequency-dependent manner. The junctions are selected such that a predetermined combination of average phase shift and differential phase shift provided between junctions produces substantially ideal circulation about a designated band center, the band center being determined by the selected reactance and susceptance of the junctions. The phase shifters are selected to provide an ideal combination of average phase shift and differential phase shift for providing substantially ideal circulation within a frequency band about the band center in a predetermined frequency dependent manner. The invention is amenable to miniaturization, operation with self-biased and reversible magnetic structures, and operation with superconducting components.