公开(公告)号：US07389098B2

公开(公告)日：2008-06-17

申请号：US10947863

申请日：2004-09-23

申请人： Nam Jin Oh ,  Moon Su Yang ,  Sang Gug Lee

发明人： Nam Jin Oh ,  Moon Su Yang ,  Sang Gug Lee

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。