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1. 发明公开

KR1020060108743A 로우 ＩＦ 무선 수신기 无效
标题翻译：低频无线接收器
公开(公告)号：KR1020060108743A
公开(公告)日：2006-10-18
申请号：KR1020067013108
申请日：2004-12-22
申请人： 엔엑스피 유에스에이, 인코포레이티드
发明人： 클라트나딤 , 오키프코노르 , 프래트패트릭조세프
IPC分类号： H04B1/06 , H04B1/16
CPC分类号： H03D7/166 , H03D3/002 , H03D2200/0078 , H03D2200/0082
摘要： A slot-based low Intermediate Frequency ('IF') radio receiver comprises an IF local oscillator (3, 5, 19) for producing I and Q IF local oscillator signal components in phase quadrature, I and Q mixer channels (4, 6) 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 (3, 5, 19) includes frequency alternation means (20) 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 (12, 13) is alternated in synchronism with the alternation of the IF local oscillator frequency.
摘要翻译：基于时隙的低中频（“IF”）无线电接收机包括用于在相位正交，I和Q混频器信道（4,6）中产生I和Q IF本地振荡器信号分量的IF本地振荡器（3,5,19）用于将输入信号与I和Q IF本地振荡器信号分量混频以产生I和Q IF信号分量。 IF本地振荡器（3,5,19）包括频率交替装置（20），用于使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，其中一个较大，另一个小于输入信号的期望载波频率，以便减少相邻和交替干扰源的影响。基带本地振荡器（12,13）的相位与IF本地振荡器频率的交替同步地交替。

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