As the operational amplifier gain and high input resistance, low output resistance, they are able to provide some cushioning effect and the signal gain.
由于运算放大器的增益高和输入电阻高、输出电阻低的特性，所以能起到一定的信号增益和缓冲作用。
The paper shows that the amplifier is an ideal current amplifier in the course of deduct. I, its output current, is about equal to i. Therefore it overcomes miller effect of voltage-mode circuit.
在推演过程中说明了该放大器为理想电流放大器，其输出电流i≈i，从而克服了电压模电路中的密勒效应。
Using the rules mentioned above, we effectively suppress the noise of the photorefractive image amplifier, get photorefractive image amplifiers with high plus and high SNR, and suggest the threshold effect of the intensity of the light induced scattering.
利用上述规律，我们有效地抑制了光折变光像放大器中的噪音，得到了高增益、高信噪比的光折变光像放大器；并提出了光致光散射的光强阈值效应。
A Doherty-feed-forward power amplifier for improving the efficiency and linearity was presented. Influence to the amplitude, the phase and the time delay mismatch of the feed-forward system has been analyzed, and the efficiency factor and the method of efficiency enhancement is discussed. Also the peaking amplifier bias and influence of peaking compensate line length to peaking efficiency point is analyzed. Finally the LDMOS field-effect transistor is used to design the Doherty-Feed-forward power amplifier, compared with the balance structure Feed-forward amplifier, simulation result shows its efficiency enhanced 5% when IMD3 is -65dBc.
将前馈技术与Doherty技术相结合，以满足功率放大器在效率和线性度方面的要求，同时对前馈系统幅度、相位、延时不平衡的影响进行了分析，就其效率因素和增强效率的方法进行了讨论；还分析了Doherty功率放大器中峰值放大器的栅极偏压V(下标 gs和峰值补偿线长度对获得峰值效率点的影响，最后把用LDMOS管设计的Doherty功放作前馈系统的主功放，与平衡结构作主功放的前馈系统相比较，仿真结果显示IMD3达到-65dBc时，其效率提高了5%。
In order to get the optimal noisy matching, analyzed and compared inside resistance and noise characteristics of bipolar junction transistor、integrated operation amplifier and junction field-effect transistorand the characteristics of three coupled modes.
为了达到最佳噪声匹配，分析比较了双极型晶体管、集成运放及场效应管的内阻、噪声特性及三种不同耦合方式的特点，从而总结出对于低内阻信号源较理想的前置放大器的有源器件是单级或多级并联双极型晶体管。
The effect of relaxation on properties of amplifier was analyzed.
用多种手段考核了模拟程序：一是对存在解析解的理想情况作对比计算；一是和国外同类程序的计算结果比对。
THD降到0.01% _ Interchannel crosstalk can obviously degrade stereo separation, but the effect is not detectable until it is worse than 20 dB, which would be a very bad amplifier indeed.
频道之间的色度亮度干扰可以很明显地减少立体声分离，但是效果要到低于20分贝的时候才能觉察出来，这是台很糟糕的功放了。
Each Hall effect digital Integrated circuit includes two quadratic Hall effect sensing elements, a voltage regulator, temperature compensating circuitry, low-level amplifier, Schmitt trigger, and an open-collector output driver.
每个霍尔效应数字集成电路包括两个二次霍尔效应传感元件，电压调节器，温度补偿电路，低电平放大器，施密特触发器和一个集电极开路输出驱动器。
SOI-LDMOS is adopted by RF power amplifier because of its excellent isolation performance and small parasitical effect.
SOI-LDMOS以优良的隔离性能、较小的寄生效应被RF功率放大器所采用。
The OFDM signal is more sensitive to the nonlinear effect of power amplifier and the phase noise in oscillator.
OFDM讯号容易受射频系统中功率放大器之非线性效应及振荡器的相位杂讯的影响。
This paper presents detailed analysis and computer simulation by MATLAB for nonlinear effect of power amplifier and phase noise in oscillator.
本论文利用MATLAB撰写程式来模拟评估功率放大器及振荡器对OFDM讯号恶化的程度。
Then we using this amplifier to be the core, and apply the negative resistance in to the circuit to make it have the gain-boosting effect. After measurement, we can verify this topology do works.
然后我们以第一颗放大器为基础，加入了负阻概念，使其具有增益加强的效果，并验证此方法是有效的。
In addition, the high power amplifier non-linear effects on the performance of navigation systems are questions that can not be ignored, the satellite payload design and basic parameters of the ground receiver selection, which required in terms of the impact of nonlinear effect, and make compromise between efficiency and distortion.
随着已建成的全球导航卫星系统的现代化和新系统的开发与部署，将有越来越多的信号共享L频段，来自于系统内部信号和不同系统的信号频谱之间相互重叠，导航信号之间的干扰变得严峻，于是无线频率兼容问题成为大家关注的焦点。
However, research shows that when the measurement signal is very small, a differential amplifier consisting of one OP amplifier can easily cause load effect due to low input resistance and signal voltage decline.
不过，研究显示，当测量信号，是非常小差分放大器组成，其中运算放大器可以很容易造成负载效应，由于低投入及抗病信号电压下降。
At the same time also taking into account the effect of actual use plus high-speed voltage feedback OPA642 operational amplifier to increase the input impedance amplifier as well as after the formation of OP amplifier LM6361 power amplifier circuit level.
同时也考虑了实际使用效果，外加高速电压反馈型运放OPA642来提高放大器输入阻抗以及OP放大器LM6361组建后级功率放大电路。
The A1101-A1104 and A1106 Hall-effect switches include the following on a single silicon chip: voltage regulator, Hall-voltage generator, small-signal amplifier, Schmitt trigger, and NMOS output transistor.
A1101-A1104 和 A1106 霍尔效应开关在单硅片里包含以下元件：稳压器、霍尔电压发生器、小信号放大器、施米特触发器和 NMOS 输出晶体管。
A series of consequent negative influences are mainly as follows. In terms of the loss of natural ecology, the traditional technical innovation cajoles people into inappropriate consumption, causes the malformed development of techniques, results in the ecological loss of technical rationality and functions as an amplifier to technical dissimilation. In terms of ecological loss of society, due to ecological loss of themselves, traditional activities of technical innovation will produce bad effect on people's value views, on much loss of intellectuals in undeveloped countries, on social economy, on political and economic orders in the world and on polarization between the rich and the poor.
由此而带来一系列的负面影响，这集中表现在：在自然生态缺失方面，传统技术创新诱导了人们的不正当消费、导致了技术的畸形发展、造成了技术理性的生态缺失以及对技术异化起到了放大器的作用；在社会生态缺失方面，由于自身的生态缺失，传统技术创新活动对人类的价值观念、对落后国家的人才流失、对社会经济、对全球政治经济秩序以及对贫富两极分化亦会产生一些不利的影响。
With the development of optical fiber communication, optical amplifier shows more and more important effect.
近几十年发展起来的光通信技术使信息传递的速率、距离和可靠性又迈上了一个新的台阶。
Because the wave type of leaking of the acoustic wave utilizes the fluid while managing to act as with the low frequency under 5Hz the medium isconveyed, measuied and has be already sinked down by various kinds of noises then by the sonar receiver, this paper applys the sonar pre-amplifier to amplify it and amplify the low frequency filtering signal step by step in accordance with the micro-mirror character in wavelet transform. Then, apply correlation method to locate the leakage spot. We have put this technology into effect and benefit from the technology.
由于音波的泄漏波型是以5HZ以下的低频率利用管内的流体当介质传送，被声纳接收器检测到时已被各种噪声淹没了，本文将运用声纳前级放大器将其放大，然后运用小波具有的多显微镜特性，把低频信号逐次地放大来提取此信号，最后运用互相关理论来确定其泄漏点，得到了实质性的效果。
The effect of a load resistor noise on the noise property of a negative feedback amplifier is also discussed.
讨论了负载电阻噪声对负反馈放大电路噪声性能的影响。