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- Design and Realization on the Low Frequency Band Pass Filter with Center Frequency Adjustment 中心频率可调节的低频带通滤波器设计与实现
- This effect is obvious at lower frequency band. 这种效应在振动低频区段更为显著。
- The assigned frequency band is 928 MHz to 902 MHz. 那分配频率乐团是 902个百万赫兹至 928个百万赫兹。
- In the band which center frequency wes 10GHZ, the isolation of these dividers/combiners was 19dB. 在中心频率为10GHZ的频段上，功率分配/合成器的隔离度为19dB。
- The simulation results show that PSWF pulses have the advantages of adaptively changeable center frequency,easily controlled band,and double orthogonality. 结果表明,PSWF脉冲具有中心频率可调、带宽可控的优点,并具有双正交性,能实现任意频点不同深度的陷波,更好地抑制窄带干扰。
- 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. 带通滤波器选用中心频率为2.;856 GHz、带宽为10 MHz的腔体滤波器;对数检波模块采用对数放大器AD8313芯片;模数转换模块采用NI公司的PXI-5102;上位机的数据采集程序采用Labview编写。
- We can't hear any program when we turn our radio onto this frequency band. 当收音机调到这个频段上时，什么节目也收听不到。
- Specialties : The range of center frequency it can achieve is bigger than One-piece Filter; At the time it has the features of wide pass-band, low insertion loss and high restraint outside the band. 特点：可实现的中心频率范围较单片滤波器宽,通带宽度范围大,插入损耗小,带外抑制高。
- Another attribute is the flux or radiant power that can be delivered in that narrow frequency band. 另一个性质就是在这样窄的频带内可以给出很高的光通量或辐射功率。
- A specified frequency band for the transmission and reception of electromagnetic signals,as for television signals. 频道，波道传送和接收电磁信号的一特定的频率波段，如电视信号
- The phase noises are -117dBc/Hz at 4MHz and -107dBc/Hz at 500kHz,both off the center frequency of 4.189GHz. 在距中心频率4·189GHz为4MHz处的相位噪声为-117dBc/ Hz ;500kHz处为-107dBc/ Hz .
- The design is very suitable for wireless communication systems which work in ISM frequency band. 所设计的软硬件接口非常适合在ism频段的无线通信系统中应用。
- All data are picked up from Intel UWB Database, and the corresponding center frequency is at 5GHz. 所采用的数据源自Intel公司的UWB数据库,中心频率为5GHz。
- The measured phase noise is-117dBc/Hz at 4MHz off the center frequency of 4.189GHz. 其在4.;189GHz频点上4MHz频偏处所测得的相位噪声为-117dBc/Hz
- The distance between the acoustic-emission source and the receiving transducer, and the background noise level are primary factors in selecting a particular frequency band. 声发射源与接收讯号传感器间的距离以及环境噪声的电平是选择频带的主要依据。
- With electrode thickness increases, passband ripple becomes smaller, center frequency moves toward lower frequency. 当电极厚度增加时，通带的涟波会变小，中心频率会降低。
- Analyse of Frequency Band in Acceleration Measurments during Ejection and Parachuting. 弹射和开伞过载测量中的频率分析。
- The SCP of backscattering signals approach the emissive center frequency with increase of ages. 随年龄的增大，质心位置越接近于发射超声的中心频率。
- The method can directly detect the fault characteristic signals in low frequency band and achievefault diagnosis. 该方法直接检测故障的低频特征信号,完成故障诊断。
- The center frequency tunability characteristic of the filter is investigated as well. 研究了该滤波器的中心频率的可调谐特性。
