发明授权
US07783273B2 Method and system for calibrating frequencies-amplitude and phase mismatch in a receiver
失效
用于校准频率的方法和系统 - 接收机中的幅度和相位失配
- 专利标题： Method and system for calibrating frequencies-amplitude and phase mismatch in a receiver
- 专利标题（中）： 用于校准频率的方法和系统 - 接收机中的幅度和相位失配
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申请号： US11543928申请日： 2006-10-06
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公开(公告)号： US07783273B2公开(公告)日： 2010-08-24
- 发明人: Koji Maeda , Satoshi Tanaka , Yukinori Akamine , Manabu Kawabe
- 申请人： Koji Maeda , Satoshi Tanaka , Yukinori Akamine , Manabu Kawabe
- 申请人地址： JP Kanagawa
- 专利权人： Renasas Electronics Corporation
- 当前专利权人： Renasas Electronics Corporation
- 当前专利权人地址： JP Kanagawa
- 代理机构： Stites & Harbison, PLLC
- 代理商 Juan Carlos A. Marquez, Esq.
- 优先权： JP2005-294444 20051007
- 主分类号： H04B1/10
- IPC分类号： H04B1/10 ; H04B7/00
摘要：
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 fi (1≦i≦N) before reception of signals and determining the frequency response fa(z) to fd(z) of a calibrating filter in a filter mismatch calibrating circuit (FIL_CAL) 195 to make zero amplitude and phase mismatches between the I component and Q component of the quadrature demodulation signal at the frequency fIFi.
公开/授权文献
- US20070080835A1 Receiver 公开/授权日：2007-04-12
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