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. 02, 2014
Filed:
Jun. 27, 2012
Yosuke Mitani, Osaka, JP;
Kazuo Matsukawa, Osaka, JP;
Masao Takayama, Osaka, JP;
Koji Obata, Osaka, JP;
Shiro Dosho, Osaka, JP;
Yosuke Mitani, Osaka, JP;
Kazuo Matsukawa, Osaka, JP;
Masao Takayama, Osaka, JP;
Koji Obata, Osaka, JP;
Shiro Dosho, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
Two T filters, one of which includes two resistive elements and one capacitive element and the other of which includes two capacitive elements and one resistive element, are inserted in a negative-feedback section of an operational amplifier, and a resistive element and a capacitive element are connected between each of intermediate nodes and a signal input terminal. A resistive element and a capacitive element which are connected to each other in parallel are connected between the signal input terminal and an inverting input terminal of the operational amplifier. With this configuration, overall admittances where elements connected to the corresponding intermediate nodes are in parallel connection are equal to each other.