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. 14, 1989
Filed:
Oct. 20, 1987
Applicant:
Inventors:
Kenji Kuramoto, Tottori, JP;
Manabu Yumoto, Tottori, JP;
Assignee:
Nippon Ferrite, Ltd., , JP;
Primary Examiner:
Int. Cl.
CPC ...
H01P / ;
U.S. Cl.
CPC ...
333-11 ; 333 242 ;
Abstract
A lumped constant non-reciprocal circuit element such as a circulator or an isolator comprising a set of mutually insulated central conductors, a garnet plate not more than 0.6 mm in thickness, a ceramic substrate having a central bore for accommodating the garnet plate and patterned electrodes formed thereon, and a permanent magnet for applying a DC magnetic field to the garnet plate. Because of this structure, this circuit element is very thin with good insertion loss properties.