Active Band-pass Filters的用法和样例：
- Design of RC Four-stage Active Band Pass Filters
- active band pass filter
- H-plane T-junction and E-plane transverse iris band pass filters are used in the diplexer structure.
- The duplexer acts as a very broad band pass filter during receiving mode and the prearnp is a low noise wide band-width amplifer that is used to amplify the echo signals.
- The signal processing system consists of a band pass filter(BPF) with center frequency of 2.856 GHz and bandwidth of 10 MHz,a logarithmic detector,a analog digital converting module,and a data acquisition program based on Labview.