公开(公告)号：US06879216B2

公开(公告)日：2005-04-12

申请号：US10273496

申请日：2002-10-18

申请人： Wei-Yung Wayne Chen ,  Michael A. Robinson

发明人： Wei-Yung Wayne Chen ,  Michael A. Robinson

IPC分类号： H04B10/158 ,  H03F3/04 ,  H03F1/36 ,  H03F3/08 ,  H03F3/14

CPC分类号： H04B10/6932

摘要： An IC includes an externally accessible terminal, a filter, and an output stage. The filter has an adjustable bandwidth and has an output node coupled to the externally accessible terminal, and the output stage has an input node coupled to the output node of the filter. By providing access to a node that is between the filter and an amplitude-limiting output stage, the IC allows one to adjust the bandwidth of the filter—or the bandwidth of a circuit, such as an amplifier, that includes the filter—by measuring the amplitude of a signal that can have a relatively high S/N ratio without being clipped by the output stage. Consequently, such access can eliminate the need for a high-precision bandwidth-adjust setup and its long bandwidth-adjust times.

摘要翻译： IC包括外部可访问的终端，过滤器和输出级。 滤波器具有可调节带宽，并且具有耦合到外部可访问终端的输出节点，并且输出级具有耦合到滤波器的输出节点的输入节点。 通过提供对过滤器和限幅输出级之间的节点的访问，IC允许调整滤波器的带宽或诸如放大器的电路的带宽，其包括滤波器测量 可以具有相对较高的S / N比而不被输出级削波的信号的幅度。 因此，这种访问可以消除对高精度带宽调整设置及其长带宽调整时间的需要。