Heterodyne receiver for low noise and image frequency repression
    2.
    发明授权
    Heterodyne receiver for low noise and image frequency repression 失效
    外差接收机用于低噪声和图像频率抑制

    公开(公告)号:US07389098B2

    公开(公告)日:2008-06-17

    申请号:US10947863

    申请日:2004-09-23

    IPC分类号: H04B1/10

    CPC分类号: H04B1/30

    摘要: Disclosed is a heterodyne receiver for low noise and image frequency repression, comprising: a low noise amplifier for receiving an input signal from an antenna and amplifying the signal while reducing a noise figure of the input signal; and a frequency converter for receiving both the input signal outputted from the low noise amplifier and a local oscillation signal, filtering the signals to repress gain of the input signal at an image frequency band and increase gain of the input signal at a signal frequency band, and converting the frequency of the signals to the intermediate frequency band.

    摘要翻译: 公开了一种用于低噪声和图像频率抑制的外差接收机,包括:低噪声放大器,用于从天线接收输入信号并放大信号同时降低输入信号的噪声系数; 以及频率转换器,用于接收从低噪声放大器输出的输入信号和本地振荡信号,对信号进行滤波以抑制图像频带处的输入信号的增益,并增加信号频带处的输入信号的增益, 并将信号的频率转换成中频带。