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:
Aug. 24, 2010
Filed:
Oct. 06, 2006
Koji Maeda, Kokubunji, JP;
Satoshi Tanaka, Kokubunji, JP;
Yukinori Akamine, Kokubunji, JP;
Manabu Kawabe, Hachioji, JP;
Koji Maeda, Kokubunji, JP;
Satoshi Tanaka, Kokubunji, JP;
Yukinori Akamine, Kokubunji, JP;
Manabu Kawabe, Hachioji, JP;
Renasas Electronics Corporation, Kanagawa, JP;
Abstract
The receiver, which enables rejection of image signals with higher accuracy over wider frequency band, can be provided as a low IF receiver by inputting a calibration signal of frequency f(1≦i≦N) before reception of signals and determining the frequency response f(z) to f(z) of a calibrating filter in a filter mismatch calibrating circuit (FIL_CAL)to make zero amplitude and phase mismatches between the I component and Q component of the quadrature demodulation signal at the frequency f.
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