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:
Sep. 29, 2009
Filed:
May. 30, 2006
Sadao Matsushima, Tokyo, JP;
Toshihide Fukuchi, Tokyo, JP;
Yuji Nakagawa, Tokyo, JP;
Shiro Koide, Aichi, JP;
Sadao Matsushima, Tokyo, JP;
Toshihide Fukuchi, Tokyo, JP;
Yuji Nakagawa, Tokyo, JP;
Shiro Koide, Aichi, JP;
The Furukawa Electric Co., Ltd., Tokyo, JP;
Denso Corporation, Kariya, JP;
Abstract
A low noise amplification circuit comprises a low noise amplifier and a filter coupled to the input terminal of the low noise amplifier. The low noise amplifier comprises an amplifying element and a matching input circuit coupled to the input terminal of the amplifying element. When gamma.sub.s shows a reflection factor in the case that signals flow from the input terminal of the amplifying element to the output terminal of the matching input circuit, impedance conversion for setting the gamma.sub.s at a desired value is made entirely or in part by means of setting the output impedance of the filter at the value different from that of characteristic impedance.