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放大器
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  amplifier
    Amplifier and Driver Circuits for Thin Film Memories with 15 Nanoseconds Read Cycle Time
    读周期为15毫微秒的磁膜存储器的放大器和驱动电路
短句来源
    Analysis of E_n and I_n Correlation Coefficient in the Nolse—model of an Amplifier
    放大器噪声模型中E_n、I_n之间相关系数的分析
短句来源
    A Wideband and High-Gain Microwave Solid-State Limiting Amplifier
    宽带高增益微波固态限幅放大器
短句来源
    2GHz Band Bipolar Transistor Linear Power Amplifier
    2GHz频段双极晶体管线性功率放大器
短句来源
    ORTHOGONAL OPTIMAL DESIGN FOR PHASE NOISE OF TRANSISTORIZED AMPLIFIER
    晶体管放大器相位噪声的正交优化设计
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  amplifer
    A Method of Measuring Amplifer Noise Parameter C
    放大器噪声相关系数C的一种测算方法
短句来源
    At the same time, through neural network learning and error feedback between the input and actual output, this method is not only suitable for power amplifier’s model but can also tolerate the amplifer’s characteristic change which would results in temperature drift and component aging. In this sense, one can implement the adaptive power amplifier predistortion by using this technique .
    与此同时,通过神经网络的学习和输入与实际输出间的误差校正,此方法不仅能适应功放的模型,也能容忍因温度漂移和元件老化引起的放大器的特性变化,从这个意义上说,使用上述方案能够实现功放的自适应预失真。
短句来源
    Finally, the scheme of the RF receiving/ transmitting system of the radar target simulator is presented based on the special requirements of a radar system. According to the scheme, we have accomplished the design and the realization of a mixer, a quadrature modulator/demodulator, a low noise amplifer, a high gain amplifer, a high frequency power amplifer and a frequency converter.
    最后,根据雷达系统的要求给出了雷达目标模拟器射频收发系统的设计方案,并且根据方案完成了混频器、正交调制解调器、低噪声放大器、高增益放大器、高频功率放大器和频率变换器的设计与实现。
短句来源
    The paper analysis and designs the low noise amplifer(LNA) and mixer. All circuits above are simulated individually using Ansoft Serenade ,and the results are satisfying with the desired performance.
    本文对射频前端电路的低噪声放大器、混频器进行了理论分析和实际设计,并在Ansoft Serenade环境下进行了模拟仿真,仿真结果符合设计要求。
短句来源
    Long trunk systems have widely adopted EDFA as reapter due to emergency of Er doped fiber amplifer,so distortion brought from nonlinearity has been an important problem.
    长途传输系统用掺铒光纤放大器(EDFA)代替中继器,使得由于光纤非线性造成的信号变形成了主要问题。
短句来源
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  enlarger
    The Cabled TV Enlarger Work Characteristic Analysis
    有线电视放大器工作特性分析
短句来源
  “放大器”译为未确定词的双语例句
    Studies on the Adaptive Predistortion Technologies of Amplifiver in OFDM Digital TV Systems
    多载波(OFDM)数字电视系统中放大器的自适应预失真技术研究
短句来源
    Research on RF Power Nonlinearity and Mobile Communication Key Techniques
    RF功率放大器非线性及移动通信关键技术研究
短句来源
    A Nonlinear Model of OP Amp in Complex Frequency Domain
    运算放大器的复频域非线性模型
短句来源
    ANALYSIS AND SIMULATION OF NONLINEARITY OF TRANSPONDER ON BOARD GEOSTATIONARY METEOROLOGICAL SATELLITE
    风云二号星上转发器功率放大器的非线性分析与模拟
短句来源
    A 10-Channel WDM+DFAA-Optical Fibe Communication System Experiment
    10频道“波分复用+光纤放大器”全光通信实验系统
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  amplifier
And we simulated the transmission model constructed with Erbium-doped fiber amplifier (EDFA) as the solo amplifier and the chirped fiber Bragg grating (CFBG) as the solo dispersion compensator used in the system.
      
The displacement of a piezoelectric multilayer actuator was amplified by a flexure-hinged amplifier based on the principles of triangle amplification.
      
A new electron beam (EB) control system was developed in a general vacuum EB machine by equipping it with an industrial control computer, programmable logic control (PLC), deflection coil, data acquisition card, power amplifier, etc.
      
This problem is of interest in connection with the possibility of application to the design of jet amplifier-one of the elements of fluidic automatic control (pneumonies) [1, 2].
      
The influence of a chain pumping reaction mechanism in a diffusion-type continuous-action chemical amplifier on an RF molecule is investigated.
      
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  amplifer
A CW seeded femtosecond optical parametric amplifer
      
Signal generators, power meters, attenuators and a spectrum analyser will be available to completely characterise the amplifer.
      
The amplifer is biased at 400mV and drain 1mA of DC current.
      
  enlarger
We propose an outline to design an instance generator using an expanding graph of a certain type, called here an "exact 1/2-enlarger".
      
We first show a simple algorithm for constructing an exact 1/2-enlarger, thereby deriving one concrete polynomial-time instance generator GEN.
      
We also show that an exact 1/2-enlarger can be obtained with high probability
      
Different negative densities were simulated by a series of time exposures for a uniform field in an enlarger, using a range of photographic papers.
      
Lenses L7 and L8 are F3.5, 150 mm focal length enlarger lenses.
      
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With the rapid progress of the electronic art, there has been a steadily increasing demand for still wider-bandwidth amplifiers. The recent introduction of distributed amplification concept has provided a new technique and powerful means for designing amplifiers with top cutoff frequencies far in excess of those previously obtainable with,ordinary amplifier circuits. A distributed amplifier of the low-pass type can easily be constructed to have a uniform frequency response from audio frequencies to frequencies...

With the rapid progress of the electronic art, there has been a steadily increasing demand for still wider-bandwidth amplifiers. The recent introduction of distributed amplification concept has provided a new technique and powerful means for designing amplifiers with top cutoff frequencies far in excess of those previously obtainable with,ordinary amplifier circuits. A distributed amplifier of the low-pass type can easily be constructed to have a uniform frequency response from audio frequencies to frequencies as high as several hundred me using conventional vacuum tubes. Unlike conventional circuits, distributed amplifiers have an attainable gain-bandwidth product which is not limited by shunt capacitance associated with the vacuum tubes and circuit wiring; the high-frequency limit being determined entirely by high-frequency effects within the tube proper.The purpose of this paper is to describe the basic principle of distributed amplification and to show how such an amplifier employing various types of transmission lines may be designed. Practical methods hi design and design details are given for a three-stage distributed amplifier, using fourteen 6AK5 pentodes with a frequency response of 0.1 mo to 140 mo and a gain of 33±1 db.Both the negative mutual-inductance m-derived and constant K artificial delay lines hare been used. The former offers the advantage of a more linear phase characteristic and a more uniform response both in amplitude and delay time.The experimental results corroborate the predictions based on the first-order theory described in this paper.

分布式放大是最近宽频带放大的最大成就,过去多年来电子学所应用的各种宽频带放大方法,其高频部分因受电子管电容和线路的分布电容所限制,不能获得理想的结果,而利用分布式放大的理论,所制成的宽频带放大器,远较一般普通的宽频带放大器,有更为宽阔的频带;从它的设计和构造上来看,也较负反馈的宽频带放大器为简单。制造一架自数千周至数百兆周的分布式放大器,在技术上并没有很大困难。本文拟对分布式放大的原理作扼要的分析;并提出了采用各类型仿真线所构成的分布式放大器的设计方法,并利用该设计方法,试作了一只三级十四管的分布式放大器,其增益为33±<1分贝,频宽自100千周至140兆周。由实验结果证明,采用m导出式低通滤波器所构成的仿真线的分布式放大器,实较用常K式者,具有更佳的相移特性和频率特性,这与理论上的分析是一致的。

This article, a result of research work caried On in connection with Teaching, aims at presenting an analysis of the basic circuit of the resistance strain gage withaut amplifier, including therin (1) a computation of the relation between the resistance of each branch of the bridge and the sensitivity of galvanometer on the one hand and the sensitivity of the gage on the other and (2) a brief discussion of the limitations in regard to both the construction and the utilization of the strain gage without amplifier...

This article, a result of research work caried On in connection with Teaching, aims at presenting an analysis of the basic circuit of the resistance strain gage withaut amplifier, including therin (1) a computation of the relation between the resistance of each branch of the bridge and the sensitivity of galvanometer on the one hand and the sensitivity of the gage on the other and (2) a brief discussion of the limitations in regard to both the construction and the utilization of the strain gage without amplifier Itconcludes with a constructive critieism of Comrade Yu-chuan Chia's article appeared in the second issue of the periodical with the title "The Resistance Strain Gage for Static Deformation—Its Design and Its Construction."

本文是結合敎學工作進行研究的一個結果,提供了對不帶放大器的電阻應變儀基本電路的分析,包括(1)電橋各臂的電阻和檢流計的靈敏度與應變儀靈敏度的關係的計算;和(2)對不帶放大器的應變儀在製造和使用方面的限制的簡短討論。並提出對本刊第二期贾有權同志:“测靜荷的電阻式應變儀的設計和製造”一文的一些改進意見。

In this paper the theoretical analysis and experimental results on the influence of the conventional methods of zero-setting in automatic drift-stabilized operational amplifier with respect to the drift of output voltage when the amplifier working as an integrator are described. Some principles of zero-setting method arc also illustrated, according to which the decreasing of integrating drift of operational amplifier can be obtained

本文就自动稳另运算放大器另点设置方法对在积分工作状态下输出电压漂移的影响 给出了理论分析及实验结果。并且提出了选择另点设置方法的若干原则,从而可以减少 放大器的积分游动。

 
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