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调制器     
相关语句
  modulator
     Two-path Bandpass ∑△ Modulator Design
     双通道带通∑△模数调制器设计方法
短句来源
     Theory Analysis and Design Research on Optical Fiber Type Traveling-wave Modulator
     光纤型行波调制器理论分析与设计探讨
短句来源
     Study on Short Pulse MOSFET Modulator and Its Trigger and Control Techniques
     短脉冲MOSFET调制器及其触发控制技术的研究
短句来源
     Study and Design of Bandpass Sigma Delta Modulator
     带通Σ-Δ调制器的研究和设计
短句来源
     A One Megawatt Average-Power Pulse Modulator
     一兆瓦平均功率脉冲调制器
短句来源
更多       
  modulators
     HIGH-SPEED Al_2O_3-BASED SUBMOUNT FOR 40Gb/s ELECTROABSORPTION MODULATORS
     应用于40Gb/s电吸收调制器的Al_2O_3高速热沉研究
短句来源
     PLC control of 50 MW klystron modulators
     50MW速调管脉冲调制器的PLC控制
短句来源
     Study of 1 Bit High Order ΣΔ Modulators
     1比特高阶ΣΔ调制器的研究
短句来源
     A Noise Model for Σ-Δ Modulators in SIMULINK
     Σ-Δ调制器在SIMULINK下的噪声模型
短句来源
     Novel 40 Gbit/s optical 3R regenerator using electroabsorption modulators
     基于电吸收调制器的新型40Gbit/s光学3R重生器
短句来源
更多       
  modulator driver
     A GaAs PHEMT Laser/Modulator Driver for 24 Gb/s Optical Transmitters
     24Gb/s GaAs PHEMT激光二极管/调制器驱动器
短句来源
     100kV/10MW All-solid-state Hard Tube Modulator Driver,Its Protection and Test Circuit Design
     100kV/10MW全固态刚管调制器驱动、保护和检测电路设计
短句来源
     Design of External Modulator Driver Circuit Applied in High-speed Burst-mode Transmission
     高速光突发模式外调制器驱动电路设计
短句来源
     An integrated laser/modulator driver for high-speed optical fiber communication systems has been developed.
     一种应用于高速光纤通讯系统的激光二极管 /调制器的单片集成驱动电路已开发成功。
短句来源
     An integrated laser and optical modulator driver for ultra-high speed optic-fiber communication systems is designed and fabricated in a 0.2μm gate length AlGaAs/InGaAs/GaAs pseudomorphic high electron mobility transistor (PHEMT) process.
     采用0.2μmGaAsPHEMT工艺设计并实现了超高速光纤通信系统用激光二极管/调制器集成驱动器电路.
短句来源
更多       
  pulse modulator
     1kHz, 30kV MAGNETIC PULSE MODULATOR
     1kHz、30kV磁脉冲调制器
短句来源
     Design of 110 MW pulse modulator's controller
     110MW脉冲调制器控制器设计
短句来源
     A 250 kV High Voltage Pulse Modulator
     250KV高压脉冲调制器
短句来源
     Experimental study on MOSFET pulse modulator
     MOSFET调制器的实验研究
短句来源
     This paper describes the structure and design principle of a pulse Gunn diode, a microwave circuit and a pulse modulator at X-band as well as the results of researched pulse Guaa oscillator: the typical pulse power of 5-9W, the optimum of 10.8W, highest efficiency of 5.5%, highest pulse duration ratio of 1%.
     文章描述了X波段脉冲耿氏二极管、微波电路、脉冲调制器结构和设计原理以及脉冲耿振荡器的研制结果:在9~10GHz范围内,脉冲功率一般值为5~9W,最佳值10.8W,最大效率为5.5%,最大工作比为1%.
短句来源
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      modulator
    Design of a piezoelectric transducer cylindrical phase modulator for simulating acoustic emission signals
          
    To conveniently carry out the pipeline leak experiment in a laboratory, leak acoustic signals are simulated by using the converse piezoelectric effect of a piezoelectric transducer (PZT) cylindrical phase modulator.
          
    On the basis of the piezoelectric equations and electromechanical equivalence principle, the transfer function of a PZT cylindrical phase modulator is delivered.
          
    A PZT cylindrical phase modulator is designed, and the numerical simulation is conducted.
          
    Results prove that the PZT cylindrical phase modulator can effectively simulate leak acoustic emission signals when the frequency is lower than 25 KHz.
          
    更多          
      modulators
    This paper summarizes the results from molecular modeling of various multidrug resistance (MDR) modulators and the MDR protein P-glycoprotein (P-gp).
          
    Synthesis and Biological Evaluation of Allosteric A1-Adenosine Receptor Modulators Structurally Related to (2-Amino-4,5,6,7-Tetr
          
    Dyes with Properties of Modulators of Redox Processes As Potential Immunotropic Agents
          
    The differentiating effect of DMSO on K562 cells was studied against the background of pretreatment of the cells by the modulators of activities of protein kinase C and Ca signaling, phorbol 12-myristate 13-acetate, and ionophore A23187.
          
    The Ca2+ uniporter was shown to be specifically activated by low concentrations of physiological modulators such as ADP, NADH, spermine, and Ca2+ itself.
          
    更多          
      modulator driver
    Appendix E presents the details of the MQW modulator driver design.
          
    Block diagram of the 40-Gb/s EA modulator driver illustrating the lumped and distributed sections.
          
    Due to the already low supply voltage levels, we opt to keep the supply voltage for modulator driver fixed.
          
    In such optical interconnects, an important component is the high performance laser=modulator driver.
          
    In this paper, the first full-featured differential GaAs pHEMT modulator driver is presented.
          
    更多          
      pulse modulator
    Studies are made of a pulse system consisting of a nonstationary continuous linear portion and a pulse modulator connected to a feedback circuit.
          
    A problem of synthesis of a signal at the input of the pulse modulator, which stabilizes the system, is solved.
          
    Bias pulse modulator for a high power Kα band (26-40 GHz) impact oscillator
          
    Main parts of rf source for the rf-gun consists of 10 MW s-band klystron and a small pulse modulator.
          
    This pulse modulator can give good stability and flatness of the output RF pulse.
          
    更多          


    The current stablizer, reported in this paper, is part of a φ-ray spectrometer. Principally, it can also be used in other apparatus requiring stablized current. The stablizer can supply a maximum current of 100 A with a degree of stablity of 0.02% in ten minutes.

    论文中所叙述的磁场电流稳定器是β谱仪的一部分。基本上它也能应用在其他需要稳定电流的仪器上。它能控制的电流最大可到100安。稳定的程度是在10分钟内电流的变动不超过0.02%。稳定器采用负反馈伺服控制原理。首先将通过标准电阻的直流电流的误差讯号加以放大。为了避免直流电压放大器的漂移效应,我们桥式式平衡调制器将直流讯号变成交变讯号后再用交流放大,然后用相灵敏解调器恢复直流讯号。在这一过程中需要的增益大约是2×10~4,我们要考虑到调制器输出点在没有讯号输入时零电位的保持,调制器的载波成分输出问题,和经过放大后调制输出讯号的波形畸变。我们把放大后的讯号再加以功率放大来控制直流发电机的激励磁场,这样就能达到稳定电流的目的。因为在系统中存在着电容和电感,讯号在系统中傅递时就有时间延迟,在闭环系统就会产生低频振荡的不稳定现象。所以在系统中安装抵消这种振荡的镇定网络也是一种必要的措施。论文的最后部分描述稳定器的部件,具体的安排,运转结果和性能。

    Modulators are important elethents in the amplificatiou of weak d.c.sig-nals.Magnetic modulator have the ProPerties of providing highest voltage ga-can,stably amplify weak d.c.signals of the order of 10~13 watta Being stmpie in construe-tion of hasic frequency magnetic modulators,and a simple metbod of calculations from graphs together with an example and some discussion on manufacturing techniques

    调制器是放大微弱直流信号的重要环节。目前通用的各种调制器中,磁调制器具有最高电压放大倍数、灵敏度和稳定性能。基频磁调制器可稳定地放大功率为10~(-13)瓦的微弱直流信号,并且简单可靠,在一般自动调节和随动系统中得到广泛应用。本文阐述一种改进的基频磁调制器线路结构,提出一种简捷图解计算法,并给出了计算举例、实验结果和制造工艺中某些问题。

    The electric-field-radiosonde for thunderclouds is made. A long wire with points at both ends is employed as its inductor and a FM-AM telemetering system is used. The FM-AM system consists of two vaccum tubes 2П1П. One is used for frequency modulator and another for transmitter. The transmitting frequency is about 85 MHZ. An anti-interference circuit is employed in the receiving equipments, thus the interference caused by non-overhead lightning can be removed. The results of five soundings obtained in thunderclouds...

    The electric-field-radiosonde for thunderclouds is made. A long wire with points at both ends is employed as its inductor and a FM-AM telemetering system is used. The FM-AM system consists of two vaccum tubes 2П1П. One is used for frequency modulator and another for transmitter. The transmitting frequency is about 85 MHZ. An anti-interference circuit is employed in the receiving equipments, thus the interference caused by non-overhead lightning can be removed. The results of five soundings obtained in thunderclouds are given and analy2ed primarily.

    用尖端导线作感应元件,用调频—调幅体制传递讯息,制成了雷雨云中的电场探空仪。频率调制器由一只2П1П管组成,另一只2П1П管组成发射频率为85兆赫的发射机。地面接收设备采用了一定的抗干扰电路,能消除非当顶闪电引起的干扰,使用该仪器进行了五次探测(结果见图9),并对深测结果作了初步分析。

     
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