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. 06, 2006
Filed:
Nov. 29, 2004
Minoru Sakai, Tokyo, JP;
Minoru Sakai, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
The present invention is directed to a non-reciprocal device whose use makes it possible to reduce the insertion loss, and the size and thickness of its body, and broaden the frequency band treated by it. The DC magnetic field is adjusted such that, in a Smith chart where the center Orepresents the normalized impedance, the impedance of the gyromagnetic componentis positioned at a value which is on a constant conductance circle smaller than the reference constant conductance circle ECpassing the center Oand which is on a constant reactance line above the reference constant reactance line EXpassing the center O. Inductor Lor Lhas one end connected to a terminal of the center conductor such that in the Smith chart, the impedance of the gyromagnetic componentseen from the other end of the inductor Lor Lis positioned at a value which is on the reference constant conductance circle ECpassing the center O. First capacitor Cor Cis connected, in parallel with the center conductor, to the other end of the inductor Lor Lsuch that in the Smith chart, the impedance of the gyromagnetic componentseen through the inductor from the connection point of the first capacitor is positioned at a value which is on the center O