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- harmonic frequency band 寄生通带抑制
- With HTS Josephson junction as the mixing element, 50th harmonic frequency mixing at 3mm wave band is obtained on the system. 在该系统上成功实现了高温超导混频器在3毫米波段的50次谐波混频。
- 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。
- The generalized harmonic wavelet can analyze signals in random frequency band, and ensure the frequency resolution unchangingly by a generalized harmonic wavelet transformation. 摘要将二进谐波小波推广到广义谐波小波后,能够对信号的任意频段进行分析,且能够保证信号经过广义谐波小波变换后其频率分辨率保持不变。
- Josephson junction mixer has much excellence, including its high sensitivity and harmonic, low local oscillator frequency and microwave power, low noise and wide frequency band. 摘要高温超导混频器具有灵敏度和谐波次数高、所需的本振和微波信号功率小、噪声低、工作频带宽等诸多优点。
- 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。
- A filter with a tuning frequency more than 10% below the lowest harmonic frequency with considerable current/voltage amplitude. 在相当大的电流/电压幅值时.;滤波器的调谐频率比最低值的谐波频率还要低10%25以上
- A high efficiency dual-band RF power amplifier has an output and/or input of a high frequency transistor well terminated at the second harmonic frequency for dual-band operation. 本发明乃一种高效率双频射频功率放大器,提供高频电晶体的输出端与?或输入端于双频操作中有良好的二阶谐波终止。
- 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 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。
- 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。
- 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。
- Harmonic frequencies in the power grid are a frequent cause of power quality problems. 谐波频率在电网中是造成电能质量问题的常见原因。
- 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 signal environment of ECM is more and more complex, so frequency measurement methods must be high-speed and precise in broad frequency band. 面对日益复杂的电子战环境,要求必须在很宽的带宽范围内,对频率信息进行快速、高精度的测量。
- Unfortunately, they also suffer from some disadvantages, such as poor rejection to outside passband, and they are easily to be disturbed by high order harmonic frequencies. 但是也都存在一些共同缺陷,诸如带外抑制能力较差,容易受到高次谐波分量的干扰等等。
- A relatively restricted frequency band, normally used for a single purpose, or made available to a single user. 比较狭窄的频带,通常用于一种目的或一个用户。
- 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