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:
Apr. 24, 2012
Filed:
Jul. 03, 2008
Yoshifumi Hosokawa, Osaka, JP;
Noriaki Saito, Tokyo, JP;
Kentaro Miyano, Osaka, JP;
Katsuaki Abe, Cupertino, CA (US);
Yoshifumi Hosokawa, Osaka, JP;
Noriaki Saito, Tokyo, JP;
Kentaro Miyano, Osaka, JP;
Katsuaki Abe, Cupertino, CA (US);
Panasonic Corporation, Osaka, JP;
Abstract
A sampling filter of such circuitry as not requiring a high frequency REF signal even if the number of decimation is decreased. In the sampling filter, the rotate capacitor in each switched capacitor circuit including Cr (-) arranged in four parallel arrays operates in four phases of integration, discharge, reset and feedback different from each other at the same timing. Consequently, a control signal for driving the switched capacitor circuit is used commonly. As a result, the circuit scale of a DCU () is reduced and the frequency of the REF signal can be lowered to the frequency of an LO signal even in operation without decimation.