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. 01, 1994
Filed:
Jul. 29, 1992
Thomas W Finkle, Santa Rosa, CA (US);
Terry A Jones, Santa Rosa, CA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
In a tunable ferrimagnetic resonator circuit, apparatus and method for tuning the circuit by manipulation of the position of the YIG spheres with respect to their associated coupling loops and the magnetic field. Each YIG sphere can be moved in three axial directions or rotated for alignment with the magnetic field while the circuit is under test, without the need for removal of any parts and without visual observation. Once the sphere has been positioned, it is automatically retained in that position without the need to be encapsulated in epoxy. The tuning process can be repeated or the circuit can be retuned at any time. The tuning apparatus can be coupled to external tooling which is manually manipulatable. Limits are included in the external tooling to prevent the spheres from touching other portions of the circuit.