The key technique of this new filter is how to achieve the extreme narrowband-pass width and a slight deviation of central frequency.
如何实现极窄的通带宽度和极小的中心频率偏差是研制中所解决的关键技术问题。
2
The principle and characteristic of the signal generated lay the sensor is analyzed. The narrowpassband following up filter, which fits to regulate the signal, is designed.
分析了该光电传感器的工作原理及信号特点，设计了适合处理该信号的窄带通跟踪滤波器。
3
Thesis also discusses the temperature stability of DWDM thin film narrowband-passfilter.