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公开(公告)号:US06934344B2
公开(公告)日:2005-08-23
申请号:US09817455
申请日:2001-03-26
申请人: Leonid Kazakevich , Fatih Ozluturk
发明人: Leonid Kazakevich , Fatih Ozluturk
CPC分类号: H03G7/001 , H03G3/3052
摘要: A system for automatic gain control prevents input overload by precisely controlling the input level of a received, digitally modulated signal without using a variable gain amplifier. A limiting amplifier in conjunction with a logarithmic detector splits an input signal path in two, providing separate phase and amplitude information for downstream digital signal processing, where the separate phase and amplitude information is processed without variable gain artifacts. The separated phase information may further be divided into I and Q signals.
摘要翻译: 用于自动增益控制的系统通过在不使用可变增益放大器的情况下精确地控制接收的数字调制信号的输入电平来防止输入过载。 与对数检测器结合的限幅放大器将输入信号路径分离成两个,为下游数字信号处理提供单独的相位和幅度信息,其中单独的相位和幅度信息被处理而没有可变增益伪像。 分离的相位信息还可以被分成I和Q信号。