公开(公告)号：US4893316A

公开(公告)日：1990-01-09

申请号：US890804

申请日：1986-07-24

申请人： Robert V. Janc ,  Steven C. Jasper ,  Lester A. Longley ,  Katherine L. Zebrose ,  William J. Turney ,  Ross J. Lillie

发明人： Robert V. Janc ,  Steven C. Jasper ,  Lester A. Longley ,  Katherine L. Zebrose ,  William J. Turney ,  Ross J. Lillie

IPC分类号： H03B27/00 ,  H03B28/00 ,  H03C3/40 ,  H03D1/22 ,  H03D3/00 ,  H03D7/16

CPC分类号： H03D3/007 ,  H03C3/40 ,  H03D1/2245 ,  H03D7/166 ,  H03B27/00 ,  H03B28/00 ,  H03D2200/005 ,  H03D2200/0052 ,  H03D3/006

摘要： A digital radio receiver is described. The digital receiver of the present invention contemplates a digital radio receiver which operates on a received analog signal which has been converted to a digital form after preselection at the output of the antenna. The digital receiver of the present invention comprises a preselector, a high-speed analog-to-digital (A/D) converter, a digitally implemented intermediate-frequency (IF) selectivity section having an output signal at substantially baseband frequencies, and digital signal processor (DSP) circuit performing demodulation and audio filtering. The radio architecture of the present invention is programmably adaptable to virtually every known modulation scheme and is particularly suitable for implementation on integrated circuits.

摘要翻译： 描述数字无线电接收机。 本发明的数字接收机设想一种数字无线电接收机，其对接收到的模拟信号进行操作，该接收的模拟信号在天线的输出处被预选之后被转换成数字形式。 本发明的数字接收机包括预选器，高速模数（A / D）转换器，具有基本基带频率的输出信号的数字实现的中频（IF）选择部分，以及数字信号 处理器（DSP）电路执行解调和音频滤波。 本发明的无线电架构可编程地适应于几乎每个已知的调制方案，并且特别适用于集成电路上的实现。