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:
Jun. 20, 1978
Filed:
Jan. 28, 1977
Applicant:
Inventor:
Peter Roschmann, Hamburg, DT;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
335209 ; 333 / ;
Abstract
A magnet system for compensating the frequency difference between the oscillator frequency f.sub.o of a YIG oscillator and the central filter frequency f.sub.mi of a YIG filter to be independent of the oscillator frequency in which two pole-pieces are provided having opposing surfaces, one which has a raised portion, and one of which has a plate of magnetic material having a saturation magnetization smaller than the smallest field strength desired. The raised surface portion of the pole-piece has a height at which the frequency f.sub.o -f.sub.mi is independent of f.sub.o.