公开(公告)号：US08130128B2

公开(公告)日：2012-03-06

申请号：US12798092

申请日：2010-03-30

申请人： Jeff D. Alderson

发明人： Jeff D. Alderson

IPC分类号： H03M1/82

CPC分类号： G06F1/02 ,  G06F2101/14 ,  H03F3/217 ,  H03K3/84 ,  H03K7/08 ,  H04B15/04 ,  H04B2215/064 ,  H04B2215/067 ,  H04L25/03828 ,  H04L25/4902

摘要： In a particular embodiment, a circuit device is disclosed that includes a data generator adapted to output a random pulse sequence having a particular spectral shape. The data generator includes a feedback loop with a transfer function, the output of which may be altered by limiter circuitry to increase stability of the data generator. The circuit device may further include, for example, a pulse edge control circuit to selectively apply a carrier suppression operation to at least one pulse-width modulated (PWM) signal in response to the random pulse sequence to produce at least one modulated PWM output signal. In such an example, the spectral energy associated with a PWM carrier of the modulated PWM output signal at a carrier frequency and associated harmonics is changed such that the modulated PWM output signal has a spectral shape defined by the particular spectral shape.

摘要翻译： 在特定实施例中，公开了一种电路装置，其包括适于输出具有特定光谱形状的随机脉冲序列的数据发生器。 数据发生器包括具有传递函数的反馈回路，其输出可以由限制器电路改变以增加数据发生器的稳定性。 电路装置还可以包括例如脉冲边缘控制电路，以响应于随机脉冲序列选择性地对至少一个脉冲宽度调制（PWM）信号施加载波抑制操作，以产生至少一个调制的PWM输出信号 。 在这样的示例中，与载波频率处的调制PWM输出信号的PWM载波和相关联的谐波相关联的频谱能量被改变，使得调制的PWM输出信号具有由特定频谱形状限定的频谱形状。