电路

Owing to the increase of the line Q-factor, the electronics shifts of the atomic fountain frequency standard are reduced by 2 orders compared with that of the atomic beam standard when equivalent servo systems are used.

由于原子喷泉跃迁谱线Q值比铯束基准提高两个数量级，故在伺服电路精度相同时，原子喷泉频标中由伺服电路引入的频移将减小两个量级。

The rest of this article time control system is composed of MCS-51 Microcontroller AT89S51 do the main control unit, the external circuit with a 12MHZ crystal oscillator, 74LS164 registers, reset circuit, three buttons, LED digital tube to do quadruple the time of the device shows no the needs of extended memory, can achieve its functions.

本文所研究的作息时间控制系统是由MCS-51系列单片机AT89S51做主控部件，外围电路用12MHZ晶体震荡器、74LS164寄存器、复位电路、三个按键、四联LED数码管做显示时间的器件，不需要外扩展存储器，就能实现其功能。

The tole rance and nonlinearity in analog circuit make its fault diagnosisic difficult. In order to solve this problem, this paper presents an analog circuit fault diagnosis method based on Rough Sets-Neural Network.

文章针对目前模拟电路故障诊断中存在的容差和非线性特性所带来的诊断难点，提出了一种基于粗集－主成分分析的模拟电路故障诊断的方法。

First of all, we introduce the 60GHz rat-race which is symmetric and experimental, and then implement 10GHz wideband mixer by using TSMC SiGe 0.35um BiCMOS process and GCTC 2.0um HBT process in circuit design. In TSMC SiGe 0.35um,we design micro mixer with Cherry Hooper technique and active load with single ended output.

本论文首先介绍60GHz实验性质的rat-race对称电路，接著在电路设计方面以TSMC SiGe 0.35μm BiCMOS以及GCT 2μm InGaP/GaAs HBT 制程来研制应用於10GHz 之宽频混频器，其中在TSMC SiGe制程包含了使用Cherry Hooper技术混频器以及电流镜主动负载单端输出的微混频器。

In SiGe BiCMOS process, there are a 5.2GHz CMFB micromixer, a 5.7GHz up-conversion micromixer using LC current combiner, a 5.2GHz LC current combine up-converter with lumped element rat-race and a 5.2GHz image rejection double quadrature down-converter.

其中SiGe BiCMOS制程包含了5.2GHz共模回授微混频器电路、5.7GHz 使用LC电流合成器之升频微混频器、整合集总元件Rat-race的5.2GHz LC电流合成升频器与5.2GHz镜像消除双正交四相位降频器等电路。

This paper puts forward the derivation of precise calculating formula used to determine the magnification ratio of voltage, input resistance and output resistance in amplifying circuits based on the feedback circuit model with parallel voltage.

在建立电流并联反馈电路模型的基础上，推导出放大电路中的电压放大倍数、输入电阻、输出电阻的精确计算公式。

Via the function simulation of analog cell and application circuit, the structure of this type of field programmable analog array has been shown to reach the expected goal.

通过相关模拟工具对单元电路和应用电路功能的仿真，表明这种结构的现场可编程模拟阵列基本达到了预期目标。

Adopting the reactive circuit of twice harmonic to process the sensor signal, the system is closed loop.

对传感器信号处理采用的二次谐波反馈电路，电路为闭环系统。

Simulation research on method for harmonic current detection of single-phase circuit based on instantaneous reactive power theory of three-phase circuit was presented.

提出了基于三相电路瞬时无功理论的单相电路谐波电流检测方法的仿真研究。

This paper carries through deepgoing systemic analysis about reactive power compensationtechnology, main circuit of SVG simulation system, hardware circuit of control system, software isdesigned and laboratory simulation system is made.

本文对现有无功补偿方式进行了系统深入的分析，完成了SVG的模拟系统主电路设计，控制系统的硬件电路和软件设计，并制作了实验室模拟系统。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。