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    • 2. 发明授权
    • Switchable gain amplifier having a high-pass filter pole
    • 具有高通滤波器极的可切换增益放大器
    • US06906584B1
    • 2005-06-14
    • US10732106
    • 2003-12-10
    • Mark MoffatMarcus Granger-Jones
    • Mark MoffatMarcus Granger-Jones
    • H03G1/00H03G3/20H03G3/30H03F3/45
    • H03G3/3078H03F2203/7215H03F2203/7218H03G1/0088H03G3/3052H03G2201/103H03G2201/202H03G2201/305H03G2201/502
    • The present invention provides a switchable gain amplifier comprising a high-pass filter pole. The switchable gain amplifier comprises first and second input nodes for receiving first and second components of a differential input signal. A first input terminal of a first differential amplifier is coupled to the first input node, and a first input terminal of a second differential amplifier is coupled to the second input node. A first variable resistance is coupled between the first input terminal of the first differential amplifier and a second input terminal of the first differential amplifier. A second variable resistance is coupled between the first input terminal of the second differential amplifier and a second input terminal of the second differential amplifier. A differential capacitor is coupled between the second input terminal of the first differential amplifier and the second input terminal of the second differential amplifier.
    • 本发明提供一种包括高通滤波器极的可切换增益放大器。 可切换增益放大器包括用于接收差分输入信号的第一和第二分量的第一和第二输入节点。 第一差分放大器的第一输入端耦合到第一输入节点,第二差分放大器的第一输入端耦合到第二输入节点。 第一可变电阻耦合在第一差分放大器的第一输入端和第一差分放大器的第二输入端之间。 第二可变电阻耦合在第二差分放大器的第一输入端和第二差分放大器的第二输入端之间。 差分电容器耦合在第一差分放大器的第二输入端和第二差分放大器的第二输入端之间。
    • 3. 发明授权
    • Reconfigurable filter architecture
    • 可重构过滤器架构
    • US06831506B1
    • 2004-12-14
    • US10665234
    • 2003-09-17
    • Mark MoffatMarcus Granger-Jones
    • Mark MoffatMarcus Granger-Jones
    • H03B100
    • H03H11/1291
    • The present invention provides a reconfigurable filter having a bandwidth and frequency offset that are independently configured, thereby allowing the filter to realize any filter pole. In general, the filter includes a filtering stage and a reverse gain stage. The filtering stage has a bandwidth configured by a bandwidth control signal from control logic and a frequency offset configured by an offset control signal. The reverse gain stage provides the offset control signal to the filtering stage based a reverse gain control signal from the control logic and the output signal. Based on the bandwidth control signal and the reverse gain control signal, the bandwidth of the filter is configured independently from the frequency offset of the filter and the frequency offset is configured independently from the bandwidth.
    • 本发明提供一种具有独立配置的带宽和频率偏移的可重构滤波器,从而允许滤波器实现任何滤波器极。 通常,滤波器包括滤波级和反向增益级。 滤波级具有由来自控制逻辑的带宽控制信号和由偏移控制信号构成的频率偏移配置的带宽。 反向增益级基于来自控制逻辑和输出信号的反向增益控制信号将偏移控制信号提供给滤波级。 基于带宽控制信号和反向增益控制信号,滤波器的带宽被独立于滤波器的频率偏移量配置,并且频率偏移独立于带宽配置。