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:
May. 15, 2012
Filed:
May. 25, 2011
Yoshifumi Hosokawa, Osaka, JP;
Noriaki Saito, Tokyo, JP;
Katsuaki Abe, Osaka, JP;
Kentaro Miyano, Osaka, JP;
Yasuyuki Naito, Osaka, JP;
Yoshifumi Hosokawa, Osaka, JP;
Noriaki Saito, Tokyo, JP;
Katsuaki Abe, Osaka, JP;
Kentaro Miyano, Osaka, JP;
Yasuyuki Naito, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A sampling mixer includes TAs (transconductance amplifiers), an in-phase mixer section connected to the TA and the TA, an opposite-phase mixer section connected in parallel with the in-phase mixer section, and a signal generator for generating a control signal for the in-phase mixer section and the opposite-phase mixer section respectively. The IIR filter using signals that underwent a current conversion by using the different transconductances is constructed, so that the filter characteristic can be designed by a weighting of the transconductance in addition to a capacitance ratio. As a result, the wide-band filter characteristic and the band-pass filter characteristic can be obtained, and deterioration of the receiving sensitivity can be suppressed by designing the filter characteristic suitable for the radio communication system.