wide-band filter

例句：

1. 1. The engineer used a wide-band filter to reduce noise in the data signal.
   工程师使用宽带滤波器来减少数据信号中的噪声。
2. 2.In radio engineering, wide-band filters are used to boost the frequency response of the receiver.
   在无线电工程中，宽带滤波器用于提高接收器的频带响应。
3. 3.The wide-band filter was designed to pass only the desired frequencies and reject all others.
   宽带滤波器被设计为只允许通过所需的频率，并拒绝所有其他频率。