公开(公告)号：US07196650B1

公开(公告)日：2007-03-27

申请号：US11342060

申请日：2006-01-27

申请人： James Hand ,  Glenn M. Romano

发明人： James Hand ,  Glenn M. Romano

IPC分类号： H03M1/12

CPC分类号： H03H17/0621 ,  H03H17/06 ,  H03H2017/0692 ,  H03H2220/06 ,  H03M1/0626 ,  H03M1/1215

摘要： Signal converter systems are provided with N analog-to-digital converters that respectively respond to N interleaved clock signals which have a common clock frequency and are further provided with a filter network that processes the converters' output digital sequences with a selected filter passband a filter passband that is contained within a single one of Nyquist zones whose widths are one half of the clock frequency and that is positioned to pass information contained in the analog signal. In a system embodiment, the filter network comprises a symmetric systolic finite impulse response filter arranged to define N input ports for reception of the digital sequences.

摘要翻译： 信号转换器系统提供有N个模数转换器，其分别响应具有公共时钟频率的N个交错时钟信号，并且还具有滤波器网络，该滤波器网络利用所选择的滤波器通带处理转换器的输出数字序列滤波器 通带包含在宽度为时钟频率的一半的Nyquist区域的单个区域中，并且被定位成传递包含在模拟信号中的信息。 在系统实施例中，滤波器网络包括对称收缩有限脉冲响应滤波器，其布置成限定用于接收数字序列的N个输入端口。

公开(公告)号：US5963607A

公开(公告)日：1999-10-05

申请号：US850343

申请日：1997-05-02

申请人： Glenn M. Romano ,  Craig R. Consiglio ,  Edward G. Tracey

发明人： Glenn M. Romano ,  Craig R. Consiglio ,  Edward G. Tracey

IPC分类号： G06F1/03 ,  H03D3/24

CPC分类号： G06F1/0328

摘要： A chirp direct digital synthesizer is formed with a phase and frequency tracker circuit to provide both enhanced resolution and reduced power consumption. The phase and frequency tracker circuit operates at a sub-synchronous clock rate and provides periodic phase and frequency correction data to the direct digital synthesizer. The phase and frequency tracker circuit is suitable for both continuous wave and chirp direct digital synthesizer operation.

摘要翻译： 啁啾直接数字合成器形成有相位和频率跟踪器电路，以提供增强的分辨率和降低的功耗。 相位和频率跟踪器电路以子同步时钟速率工作，并向直接数字合成器提供周期性的相位和频率校正数据。 相位和频率跟踪器电路适用于连续波和啁啾直接数字合成器操作。