论文部分内容阅读
在低频(600H z～500kH z)常用的带通滤波器中,LC滤波器体积大,稳定性欠佳,晶体滤波器稳定性好,但只能制成窄带滤波器,并且抗振动冲击性能差。有源滤波器虽体积小,但稳定性和衰减特性常不佳,而且调试不易。此外,陶瓷滤波器也存在温度系数差和低频时抗震动性能低。所以,选择性能
In the low frequency (600H z ~ 500kH z) commonly used band-pass filter, LC filter bulky, poor stability, crystal filter stability, but can only be made of narrow-band filter, and the anti-vibration impact of poor performance . Although the active filter is small in size, its stability and attenuation characteristics are often poor, and debugging is not easy. In addition, the ceramic filter also has low temperature coefficient of vibration and low anti-vibration performance. So, choose performance