公开(公告)号：US07146144B2

公开(公告)日：2006-12-05

申请号：US10689296

申请日：2003-10-20

申请人： Ian Robinson ,  Jack Macek ,  Frank Winter

发明人： Ian Robinson ,  Jack Macek ,  Frank Winter

IPC分类号： H04B7/00 ,  H04B1/06 ,  H04B1/26

CPC分类号： H03M3/50 ,  H03M7/3017 ,  H03M7/3024

摘要： Systems and methods are provided for providing high dynamic range operation over a variable range of frequencies. A delta-sigma modulator, having associated frequency characteristics, produces a digital output signal. A digital-to-analog converter converts the digital output signal into an analog signal. A clock circuit provides a clock signal to the delta-sigma modulator and the digital-to-analog converter. A frequency control controls one or more of the clock circuit, the delta-sigma modulator, and the digital-to-analog converter to alter the frequency characteristics of the delta-sigma modulator. A filter circuit can provide one or more passbands to one or more downstream amplifiers ensuring that out of band quantization noise is removed before amplification.

摘要翻译： 提供了用于在可变频率范围内提供高动态范围操作的系统和方法。 具有相关频率特性的Δ-Σ调制器产生数字输出信号。 数模转换器将数字输出信号转换为模拟信号。 时钟电路向Δ-Σ调制器和数模转换器提供时钟信号。 频率控制控制时钟电路，Δ-Σ调制器和数 - 模转换器中的一个或多个以改变Δ-Σ调制器的频率特性。 滤波器电路可以向一个或多个下游放大器提供一个或多个通带，确保在放大之前去除带外量化噪声。

公开(公告)号：US20050085194A1

公开(公告)日：2005-04-21

申请号：US10689296

申请日：2003-10-20

申请人： Ian Robinson ,  Jack Macek ,  Frank Winter

发明人： Ian Robinson ,  Jack Macek ,  Frank Winter

IPC分类号： H03M3/00 ,  H04B1/02 ,  H04B1/04

CPC分类号： H03M3/50 ,  H03M7/3017 ,  H03M7/3024

摘要： Systems and methods are provided for providing high dynamic range operation over a variable range of frequencies. A delta-sigma modulator, having associated frequency characteristics, produces a digital output signal. A digital-to-analog converter converts the digital output signal into an analog signal. A clock circuit provides a clock signal to the delta-sigma modulator and the digital-to-analog converter. A frequency control controls one or more of the clock circuit, the delta-sigma modulator, and the digital-to-analog converter to alter the frequency characteristics of the delta-sigma modulator. A filter circuit can provide one or more passbands to one or more downstream amplifiers ensuring that out of band quantization noise is removed before amplification.

摘要翻译： 提供了用于在可变频率范围内提供高动态范围操作的系统和方法。 具有相关频率特性的Δ-Σ调制器产生数字输出信号。 数模转换器将数字输出信号转换为模拟信号。 时钟电路向Δ-Σ调制器和数模转换器提供时钟信号。 频率控制控制时钟电路，Δ-Σ调制器和数 - 模转换器中的一个或多个以改变Δ-Σ调制器的频率特性。 滤波器电路可以向一个或多个下游放大器提供一个或多个通带，确保在放大之前去除带外量化噪声。