intermediate frequency preamplifier

例句：

1. 1.The intermediate frequency preamplifier is used to amplify the signal before it reaches the receiver.
   中频前置放大器用于在信号到达接收器之前对其进行放大。
2. 2. The engineer designed the intermediate frequency preamplifier to improve the signal-to-noise ratio.
   工程师设计了中频前置放大器，以提高信噪比。
3. 3. The intermediate frequency preamplifier helps to filter out unwanted noise from the input signal.
   中频前置放大器有助于从输入信号中过滤掉不需要的噪声。