基本信息:
- 专利标题： Low if radio receiver
- 专利标题（中）：无线接收机低
- 申请号：US10596910 申请日：2004-12-22
- 公开(公告)号：US20070165748A1 公开(公告)日：2007-07-19
- 发明人： Nadim Khlat , Conor O'Keefe , Patrick Pratt
- 申请人： Nadim Khlat , Conor O'Keefe , Patrick Pratt
- 申请人地址： TX Austin 78735
- 专利权人： Freescale Semiconductor, Inc.
- 当前专利权人： Freescale Semiconductor, Inc.
- 当前专利权人地址： TX Austin 78735
- 优先权： EP032933343.4 20031229
- 国际申请： PCT/EP04/14913 WO 20041222
- 主分类号： H03D3/00
- IPC分类号： H03D3/00
摘要：
A slot-based low Intermediate Frequency (‘IF’) radio receiver comprises an IF local oscillator for producing I and Q IF local oscillator signal components in phase quadrature, I and Q mixer channels for mixing the input signal with the I and Q IF local oscillator signal components to produce I and Q IF signal components. The IF local oscillator includes frequency alternation means for causing the IF local oscillator frequency to alternate a plurality of times during each frame between first and second values, one of which is greater and the other smaller than the desired carrier frequency of the input signal so as to reduce the effect of adjacent and alternate interferers. The phase of the baseband local oscillator is alternated in synchronism with the alternation of the IF local oscillator frequency.
摘要（中）：
基于时隙的低中频（'IF'）无线电接收机包括一个IF本地振荡器，用于产生相位正交I和Q混频器信道中的I和Q IF本地振荡器信号分量，用于将输入信号与I和Q IF本地 振荡器信号分量产生I和Q IF信号分量。 IF本地振荡器包括频率交替装置，用于使得IF本地振荡器频率在第一和第二值之间的每个帧期间交替多次，其中一个值较大，另一个小于输入信号的期望载波频率，以便 以减少相邻和替代干扰源的影响。 基带本机振荡器的相位与IF本地振荡器频率的交替同步交替。
公开/授权文献:
- US07697632B2 Low IF radio receiver 公开/授权日：2010-04-13