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:
Feb. 07, 2012
Filed:
Nov. 22, 2006
Yoshifumi Hosokawa, Kanagawa, JP;
Akihiko Matsuoka, Kanagawa, JP;
Kentaro Miyano, Kanagawa, JP;
Panasonic Corporation, Osaka, JP;
Abstract
It is an object of the present invention to provide a sampling mixer and a receiver, capable of optimizing a sampling rate of an output signal in response to a fractional band of a modulation band with respect to an RF frequency of the received signal. A sampling mixer of the present invention, includes a history capacitorfor integrating a received signal that is converted in terms of current in a continuous time, rotation capacitorstofor repeating an integration and a discharge of an input signal, a digital controllerfor controlling integration periods of the rotation capacitorsto, and a controlling portionfor controlling discharges of the rotation capacitorsto, wherein the number of the rotation capacitorstoconnected at a time to a buffer capacitoris switched in answer to a fractional band of the modulation band with respect to a RF frequency. As a result, the decimation ratio of the sampling rate can be varied, and the quantization noise generated in the AD conversion can be reduced.