公开(公告)号：US06922449B1

公开(公告)日：2005-07-26

申请号：US09719632

申请日：1999-06-17

申请人： Robert Owen Bristow

发明人： Robert Owen Bristow

IPC分类号： H04B1/16 ,  H04B1/26 ,  H04B1/69 ,  H04B000/00

CPC分类号： H04B1/0025 ,  H04B1/0003 ,  H04B1/005 ,  H04B1/006 ,  H04B1/16 ,  H04B1/26

摘要： A radio receiver architecture is disclosed which has first and second front end circuits optimized for reception in two frequency bands. Each front end circuit includes a mixer for downconverting received signals to a respective intermediate frequency. Signals from the two front end circuits are passed to a single analog-to-digital converter. The sampling rate of the analog-to-digital converter and the intermediate frequencies are chosen such that the received signals appear at the same point in different teeth of the alias response of the analog-to-digital converter.

摘要翻译： 公开了一种无线电接收机架构，其具有针对在两个频带中接收而优化的第一和第二前端电路。 每个前端电路包括用于将接收到的信号下变频到各个中间频率的混频器。 来自两个前端电路的信号被传递到单个模拟 - 数字转换器。 选择模数转换器和中间频率的采样率，使得接收到的信号出现在模数转换器的别名响应的不同齿的同一点处。