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. 13, 2001
Filed:
Jul. 24, 1999
Applicant:
Inventor:
Marinus L. Korber, Jr., San Carlos, CA (US);
Assignee:
Stellex Microwave Systems, Inc., Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 2/300 ; H03B 5/18 ; H01P 7/00 ;
U.S. Cl.
CPC ...
G01R 2/300 ; H03B 5/18 ; H01P 7/00 ;
Abstract
A YIG oscillator is provided having a YIG sphere magnetically coupled to a permanent magnet, a field straightener, and a ferromagnetic ring. The field straightener is attached to the permanent magnet and has a predetermined circumference. The ferromagnetic ring is configured to fit around the predetermined circumference of the field straightener. The ferromagnetic ring fine-tunes the magnetic field combination of the permanent magnetic and the field straightener. A coupling loop is configured to transceive resonance signals to and from the YIG sphere.