Noninverted wavelength conversion for 40 Gb/s return-to-zero signal based on semiconductor optical amplifier and optical bandpass filter.
基于半导体光放大器和整形滤波器的40 Gb/s 的归零正码波长变换研究。
Strong knowledge with RF product, such as base station antenna, filter, power amplifier, etc, is preferred.
了解射频产品，比如基站天线，滤波器，功率放大器等者，优先。
The transformation between digital signal and DC voltage was made with D/A converser and high voltage amplifier; varactor s were used for tuning components; the bandpass filter was a combline microstrip line one, its dimension was presented.
采用数模转换器和高压运放实现数字信号与直流电压的转换；以变容二极管作为调谐元件；带通滤波器采用梳状微带线结构，并给出了结构参数。
Three LNA circuits have been implemented. In the first chip, a wideband tunable low noise amplifier is analyzed and designed using the Chebyshev filter design to achieve broadband input impedance matching and a MOS varactor provides frequency tuning capability.
第一颗晶片，设计适用於接收端超宽频系统之可调频率放大器被设计与分析，利用柴比雪夫滤波器设计达到宽频之输入阻抗匹配，利用电晶体可变电容来调变频率。
Apart from this step, designers should also connect an EMI filter, such as a ferrite bead, to the output of the amplifier.
除此之外，调试人员还应将电磁波滤波器连接至音频放大器音频输出端，诸如铁氧体磁环均能达到类似的过滤效果。
Including the low-pass filter circuit and Operation Transconductance Amplifier circuit design.
包括低通滤波电路，跨导运算放大电路电路的设计。
Adjusting the preset frequency of the bandpass filter amplifier, the weld full-penetration can be exactly controlled to a considerable extent.
予置不同的带通滤波器中心频率，可以在很大范围内控制焊缝熔透。
This thesis s presented an improved drive-right-leg circuit. Drive-right-leg signal phase compensation was accessed by three steps: acquiring the drive-right-leg amplifier`s output signal and converting it to digital signal, digital signal processing, feeding back the processed signal to the right leg through DA conversion and filter net at last.
本文提出了一种数字右腿驱动电路，这种电路将采集到的右腿放大电路输出信号数字化并进行数字信号处理，通过模数转换和滤波网络反馈至右腿，实现了右腿驱动信号的相位补偿功能。
Because there are large-capacity power supply filter capacitor, which has led to the power amplifier circuit for a high voltage, one will be lower, there is obviously the strength of the voice of change; At the same time, because the moment will break off the flow of electricity 窜入 interference signal amplifier, can also lead to other noise.
因为电源内部有大容量的滤波电容，就导致功放电路的供电电压一会高，一会低，声音的强弱就有明显变化；同时，因为在通断的瞬间会有电流通断的干扰信号窜入放大电路，也会导致其他噪音。
In the system, parameters are divided into stead-going and transient ones. Conditioning circuits are designed for stead-going parameters which include amplifier, refinisher, isolator and filter.
试验台测试系统需要采集的信号种类繁多，信号的大小各异，对试验结果的影响重大，为保证测量结果的准确性，必须根据被测信号的特点进行放大、整形、隔离、滤波等处理。
It passes through preamplifier, a band-pass filter, a second amplifier, a low-pass filter and an amplifier which has an adjustable enlargement factor.
信号通过前置放大器、带通滤波器、二级放大器、低通滤波器、三级放大器等电路，得到放大和滤波处理。
A light and B light are received by photocell through optical filter and converted electric signal, and loaded locking-in amplifier.
该方法排除背景光等干扰，使透过率测试可以在亮场中进行，克服传统方法在暗室中单通道分时测试存在的缺点。
In high frequency applications of the Sallen and Key filter, the gain bandwidth of the operational amplifier can seriously degrade the performance of the filter.
Sallen-Key滤波器在高频下工作时，由于运算放大器的带宽增益的下降，会严重地恶化滤波器的性能。
Thus, the locked-in amplifier and compound digital filter technology are designed.
根据电力系统运行现场存在的多种干扰信号，本文侧重于采集部分的研究和数字信号技术在软件中的应用，分别采用了锁定放大器技术和复合数字滤波技术。
Analyzing the inverse problem of the multi-pass laser amplifier system containing a spatial filter by using successive iteration method.
用逐次逼近迭代法分析含空间滤波器的多程激光放大系统的逆问题。
The magnetizer consists of coil and incentive power, and AE testing system consists of sensor, pre-amplifier, main-amplifier and filter.
本测试系统的硬件部分由磁化器和AE检测系统两部分组成，线圈和激励电源组成磁化器部分，传感器、前放、主放和滤波电路组成的AE检测部分。
The heart sound measurement devices converts heart sounds into electrical signals through sensor. After the low-pass filter and high-pass filter, the electrical signals is magnified to 0~5V by the amplifier. And then it is sent to MSC 89S51.Inside 89S51, the maximum first heart sound is extracted. Finally it passes the %26quot; SIPO%26quot; chip 74LS164 and displays on the LED.
该心音测量器通过心音传感器将心音转化成电信号，通过低通滤波电路，高通滤波电路以及放大电路得到幅值在0~5V的心音电信号，经过A/D转换后送入单片机89S51，在单片机内部提取出第一心音最大幅值，最后将其通过%26ldquo；串入并出%26rdquo；芯片74LS164在8段LED上显示。
Based on the theory of the detection technique of Lock-in amplifier, the parameter requirements of the low pass filter used in the detection technique of Lock-in amplifier are discussed.
根据锁定放大器的原理，讨论了应用于锁定放大器之中的低通滤波器的性能要求。
In chapter 4, a broadband and high gain amplifier with low-pass filter network is proposed and designed.
第四章提出了一种具有低通滤波网络的宽带、高增益放大器，并且进行了设计。
South Korea YTC company is specialized in producing YT1000 series of electrical valve positioner, YT1200 series of gas gas valve positioner, YT2300, YT2400 Series Intelligent valve positioner and air filter valves, valve at the transmitter, pneumatic amplifier, Electromagnetic valve, the valve limit switches, and other relevant annex of the manufacturers.
韩国YTC公司是专业生产YT1000系列电气阀门定位器、YT1200系列气气阀门定位器、YT2300、YT2400系列智能阀门定位器及空气过滤减压阀、阀位变送器、气动放大器、电磁阀、限位开关等阀门相关附件的厂家。