-
公开(公告)号:US08411799B1
公开(公告)日:2013-04-02
申请号:US12618541
申请日:2009-11-13
IPC分类号: H03D3/00
CPC分类号: H03D7/168
摘要: A receiver having an intermediate frequency error correction circuit includes a mixer having a source input, a local oscillator input, and an IF output, an adjustable frequency local oscillator having an output coupled to the local oscillator input of the mixer, an IF filter having an input coupled to the IF output of the mixer and an IF filtered output, where the IF filter has an IF filter frequency response, and control circuitry coupled to the local oscillator such that the frequency of the local oscillator can be varied to at least: partially correct an IF frequency error.
摘要翻译: 具有中频纠错电路的接收机包括具有源输入,本地振荡器输入和IF输出的混频器,具有耦合到混频器的本地振荡器输入的输出的可变频本地振荡器,具有 耦合到混频器的IF输出的输入端和IF滤波器输出,其中IF滤波器具有IF滤波器频率响应,以及耦合到本地振荡器的控制电路,使得本地振荡器的频率可以至少部分地变化: 纠正IF频率误差。