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:
Jul. 28, 1998
Filed:
Sep. 13, 1996
Hiroki Dejima, Nagaokakyo, JP;
Takashi Hasegawa, Nagaokakyo, JP;
Yutaka Ishiura, Nagaokakyo, JP;
Yoshikazu Chigodou, Nagaokakyo, JP;
Hiroshi Matsui, Nagaokakyo, JP;
Keiji Ogawa, Nagaokakyo, JP;
Abstract
A non-reciprocal circuit element which can be miniaturized while still providing a matching capacitance having a large value. A circulator, for example, has central electrodes and a multilayer substrate for forming a matching capacitance. The multilayer substrate is formed by stacking a plurality of dielectric sheets provided with central electrodes or matching capacitive electrodes with each other and integrally firing the same. The matching capacitance is formed by connecting multilayer capacitive parts which are formed by stacking a number of dielectric sheets which are each partially sandwiched by a pair of capacitive electrodes in parallel with each other. An upper surface of the multilayer substrate has a first aperture for receiving a ferrite member and a second aperture for receiving a permanent magnet in positions facing the central electrodes.