This filter for use in ECM OOK signal carrier extraction circuits uses synthesis de- sign and NB differential bridge type circuit configuration containing two section four crys- tal Units.

• 该滤波器用于电子对抗OOK信号提载波电路中,用网络综合法设计,采用两节四晶体窄带差接桥式电路结构,达到的技术指标为:中心频率f_0=500kHz;