The key technique of this new filter is how to achieve the extreme narrow band-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 bandwidth of the radio-frequency signal for the spread spectrum communication can be spreaded to several times or even thousands of times the bandwidth of the information signal.
扩频通信的射频信号频带宽度，可扩展到信息信号频带宽度的数倍乃至数千倍。
3
The device parameter as well as resonance frequency, mechanical quality factor and work bandwidth were determined by the equivalent circuit input impedance admittance circle diagram.