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signal frequency amplifier 信号频率放大器
I am majored in audio frequency amplifier. 我主修音频放大器。
Simultaneously we append a high frequency amplifier in the high frequency sector, in order to recover the reduction of the gain in the new system. 同时，在改进后雷达的高频部分增加高频放大器，以抵消天线改进后引起的增益下降。
In pulse code modulation,a spurious signal formed from beats between the signal frequency and the sample frequency. 在脉冲编码调制中,信号频率和取样频率之间的差拍所引起的伪信号。
Select frequency amplifier in this paper constitute LPF(Low-Pass Filter) and HPF(High-Pass Filter).It is easy to adjust and to design because there is less parameter. 本课题设计的选频电路由高通滤波电路和低通滤波电路级联组成,电路参数较少,易于设计和调节。
This instrument can measure AC signal frequency either of the single phase voltage or of the tri-phase voltage. 本表既可测交流单相电压信号之频率,亦可测交流三相电压信号之频率。
The high permeability of the ferromagnetic reeds in a reed relay causes a pronounced skin effect with increasing signal frequency. 干簧式继电器中铁磁簧片的高磁导率会随信号频率的增加而产生很强的趋肤效应。
In pulse code modulation, a spurious signal formed from beats between the signal frequency and the sample frequency. 在脉冲编码调制中,信号频率和取样频率之间的差拍所引起的伪信号。
It has sharp impedance characteristics at desirable frequency and it does affect the signal frequency. 在某一频率区域内，其阻抗值急剧上升，从而在特定的频率内可获得较高的衰减速效果而对信号不产生影响。
A false signal in telecommunication links from beats between signal frequency and sampling frequency. 假信号信号频率和取样频率之间的拍子在无线电通信线路产生的假信号。
The method tracks signal frequency by LMS algorithm and analyses the phase of output signal. 通过采用最小均方误差自适应滤波算法 ,跟踪信号的单一频率 ,分析输出信号的包络 ,实现PCM/FSK信号的解调。
They can also be helpful if the original signal frequency does not fit in the DUT testing frequency. 如果原始信号频率不适合于DUT的测试频率，信号滤波也非常有用。
If the signal frequency to be measured is low, wide strobe gate is required for high measurement precision. 当被测信号频率较低时，需要很宽的选通门才能得到较高的测量精度。
The experiment shows that AWG has wide signal frequency band and high resolution. 实验表明，此波形发生器产生的信号频率范围广，分辨率高，具有一定的实用价值。
The output signal can be converged normally when the designed frequency departs the input signal frequency by 20%. 当设置的初始频率偏离输入信号频率20%25时,输出信号仍可以正常收敛。
As the addition of signal frequency, oscillograph will drop to demonstrating ability correctly of signal. 跟着信号频率的增添，示波器对信号的正确显示能力将回升。
double-tuned intermediate frequency amplifier 双调谐中频放大器
While turning on off the LCD, in few cases, the signal frequency of the VGA card will affect the LCD and cause interference. 在极少的情况下,萤幕会出现干扰杂纹,。这种情况可能是VGA卡的讯号卡的讯号频率所造成,属于正常现象。
FET high frequency amplifier circuit 场效应管高放电路
The relationship between acoustic signal frequency and beam diamter, which is inconsistent with the results of work[7. 8],is meassured to be f= Cs/2d. 声信号频率与束直径的关系为f=(C_s)/(2d),它不同于工作的结果。