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公开(公告)号：US5107225A
公开(公告)日：1992-04-21
申请号：US620092
申请日：1990-11-30
CPC分类号： H03G3/3042 , H03G3/3078
摘要： A closed loop automatic gain control (AGC) circuit with high dynamic range capabilities having an amplifier circuit for receiving an input signal, which is susceptible to variations in signal power, and a control signal. The amplifier circuit is responsive to the control signal for amplifying the input signal at a gain level corresponding to the control signal so as to provide a corresponding output signal. A measurement circuit is coupled to the amplifier means for measuring logarithmic signal power of the amplified input signal and providing a corresponding linear measurement signal. An integration circuit is included for receiving the measurement signal, and a reference signal which corresponds to a desired signal power of the output signal. The integration circuit integrates with respect to time the difference between the measurement signal and the reference signal, and generates the control signal which corresponds to the result of the integration.
摘要翻译： 具有高动态范围能力的闭环自动增益控制（AGC）电路具有放大器电路，用于接收容易受到信号功率变化的输入信号和控制信号的影响。 放大器电路响应于控制信号，以与控制信号相对应的增益电平放大输入信号，从而提供相应的输出信号。 测量电路耦合到放大器装置，用于测量放大的输入信号的对数信号功率并提供相应的线性测量信号。 包括用于接收测量信号的积分电路和对应于输出信号的期望信号功率的参考信号。 积分电路相对于测量信号和参考信号之间的差异而积分，并且产生对应于积分结果的控制信号。
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公开(公告)号：US5283536A
公开(公告)日：1994-02-01
申请号：US48559
申请日：1993-04-16
CPC分类号： H03G3/3042 , H03G3/3078
摘要： A closed loop automatic gain control (AGC) circuit with high dynamic range capabilities having an amplifier circuit for receiving an input signal, which is susceptible to variations in signal power, and a control signal. The amplifier circuit is responsive to the control signal for amplifying the input signal at a gain level corresponding to the control signal so as to provide a corresponding output signal. A measurement circuit is coupled to the amplifier means for measuring logarithmic signal power of the amplified input signal and providing a corresponding linear measurement signal. An integration circuit is included for receiving the measurement signal, and a reference signal which corresponds to a desired signal power of the output signal. The integration circuit integrates with respect to time the difference between the measurement signal and the reference signal, and generates the control signal which corresponds to the result of the integration.
摘要翻译： 具有高动态范围能力的闭环自动增益控制（AGC）电路具有放大器电路，用于接收容易受到信号功率变化的输入信号和控制信号的影响。 放大器电路响应于控制信号，以与控制信号相对应的增益电平放大输入信号，从而提供相应的输出信号。 测量电路耦合到放大器装置，用于测量放大的输入信号的对数信号功率并提供相应的线性测量信号。 包括用于接收测量信号的积分电路和对应于输出信号的期望信号功率的参考信号。 积分电路相对于测量信号和参考信号之间的差异而积分，并且产生对应于积分结果的控制信号。
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