公开(公告)号：US08200181B1

公开(公告)日：2012-06-12

申请号：US12201116

申请日：2008-08-29

申请人： Nadim Khlat ,  Alexander Wayne Hietala ,  Frank Della Corte

发明人： Nadim Khlat ,  Alexander Wayne Hietala ,  Frank Della Corte

IPC分类号： H04B1/26 ,  H04B15/00 ,  H04B1/28

CPC分类号： H04B1/30 ,  H04B1/0057

摘要： The present invention relates to a dual radio frequency (RF) receiver circuit that includes a first RF mixer and a second RF mixer. The first and second RF mixers may be fed from a common local oscillator or from two separate local oscillators. When fed from two separate local oscillators and when the first and second RF mixers are receiving the same or nearly the same RF channel, the frequency of the RF channel is less than the frequency of one local oscillator and is greater than the frequency of the other local oscillator. This arrangement separates the frequencies of the local oscillators, thereby reducing noise, instability, or both, which may otherwise de-sensitize the dual RF receiver circuit.

摘要翻译： 本发明涉及一种包括第一RF混频器和第二RF混频器的双射频（RF）接收机电路。 第一和第二RF混频器可以从公共本地振荡器或两个单独的本地振荡器馈送。 当从两个独立的本地振荡器馈送时，并且当第一和第二RF混频器正在接收相同或几乎相同的RF信道时，RF信道的频率小于一个本地振荡器的频率并且大于另一个本地振荡器的频率 本地振荡器。 这种布置分离本地振荡器的频率，从而降低噪声，不稳定性或两者，否则可以使双RF接收器电路去敏化。