发明授权
US4513385A Apparatus and method for suppressing side lobe response in a digitally
sampled system
失效
用于在数字采样系统中抑制旁瓣响应的装置和方法
- 专利标题： Apparatus and method for suppressing side lobe response in a digitally sampled system
- 专利标题（中）： 用于在数字采样系统中抑制旁瓣响应的装置和方法
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申请号： US462494申请日： 1983-01-31
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公开(公告)号： US4513385A公开(公告)日： 1985-04-23
- 发明人: David L. Muri
- 申请人： David L. Muri
- 申请人地址： IL Schaumburg
- 专利权人： Motorola, Inc.
- 当前专利权人： Motorola, Inc.
- 当前专利权人地址： IL Schaumburg
- 主分类号： H03H17/00
- IPC分类号： H03H17/00 ; G01R23/16 ; G06F17/10 ; G06F17/14 ; H01Q3/26 ; H04B20060101 ; H04B1/06 ; H04L27/00 ; H04L27/26 ; G06F3/05
摘要：
A decoder circuit is provided which employs digital sampling and correlation apparatus to detect the presence of a received tone signal exhibiting a predetermined frequency. Samples of received tone signals are taken and, in effect, multiplied by a substantially rectangular observation window which includes a bite interval of selected duration and location therein. A correlator correlates the windowed samples to detect samples corresponding to the predetermined frequency (main lobe frequency). A significant decrease in undesired side lobe response is thus achieved.
公开/授权文献
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