公开(公告)号：US20050143031A1

公开(公告)日：2005-06-30

申请号：US10503789

申请日：2002-01-21

申请人： Oswald Moonen ,  Peter Rutten ,  Stephanus Crijns

发明人： Oswald Moonen ,  Peter Rutten ,  Stephanus Crijns

IPC分类号： H04B1/26 ,  H03D7/18 ,  H03J3/08 ,  H04B1/30 ,  H04B1/40 ,  H04B1/18

CPC分类号： H04B1/005 ,  H03J3/08 ,  H04B1/30 ,  H04B1/406

摘要： A multi-band receiver for receiving an input signal having a frequency situated either in a first band or in a second band. The receiver comprising a mixer for combining an amplified signal having substantially the same frequency as the input signal with a periodical signal generated by a local oscillator. The mixer generates an intermediate frequency signal, the intermediate frequency signal (IF) being inputted to an IF band-pass filter. A central frequency of the band-pass filter is substantially equal to a frequency of the intermediate frequency signal. The receiver is characterized in that the central frequency of the IF band-pass filter is substantially independent of a combining mode of the amplified signal and the periodical signal, the combining mode being selected from an upper heterodyning mode and a lower heterodyning mode.

摘要翻译： 一种用于接收具有位于第一频带或第二频带中的频率的输入信号的多频带接收机。 接收机包括用于将具有与输入信号基本上相同的频率的放大信号与由本地振荡器产生的周期信号组合的混频器。 混频器产生中频信号，中频信号（IF）被输入到IF带通滤波器。 带通滤波器的中心频率基本上等于中频信号的频率。 接收器的特征在于，IF带通滤波器的中心频率基本上与放大信号和周期信号的组合模式无关，组合模式选自上外插模式和下外插模式。