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This paper introduces the principle of phase-locked loop and analyzes the performance characteristics of PLL chip ADF4106 which has wide bandwidth and low power consumption.And then introduces the design method of a kind of low phase noise frequency synth
中文意思:
介绍了锁相环路的工作原理,分析了低功耗宽带集成锁相环芯片ADF4106的工作特性,并介绍了一种利用单片机控制该芯片的低相位噪声频率合成器的设计方法,讨论了环路滤波器的设计,为高频频率合成器的设计提供了很好的思路。


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This paper introduces the present situation of and the problems existing in current financing lease in Shanxi Province,and points out the functions of the financing lease in the economic operation of Shanxi Province and its developing prospect. 介绍了山西省融资租赁现状及目前存在的问题,指出融资租赁在山西经济运行中的作用及其发展前景。
This paper introduces the present situation of sewage flowmeter,analyzes on MFC inductive digital water-level sensor,and advances a kind of new sewage metering method. 介绍了污水流量计的现状,分析了MFC感应式数字水位传感器,提出了一种新的污水计量方法。
This paper introduces the present situation of the researches on the digital image watermark,probes into the application of the wavelet theory in the watermark system,and connecting with the image compression standard JPEG2000 in the new era,advances an e 介绍了图像数字水印的研究现状,探讨了小波理论在水印系统中的应用,结合新时期的图像压缩标准JPEG2000,提出一种水印的嵌入及检测算法并进行了仿真实验。
This paper introduces the principle and simulation flow about virtual mark navigation for a new type of AGV navigation way based machine vision. 摘要论述了一种基于视觉的新型AGV导航方式:虚拟标志导航的工作原理及其仿真工作流程。
This paper introduces the principle and types of fiber-optic gyroscope (FOG), compared fiber-optic gyroscope with other gyroscopes, and summarized the merits of fiber optic gyroscope. 摘要介绍了光纤陀螺的原理及种类,通过将光纤陀螺与其它陀螺进行比较,总结出了光纤陀螺的优点。
This paper introduces the principle of phase-locked loop and analyzes the performance characteristics of PLL chip ADF4106 which has wide bandwidth and low power consumption.And then introduces the design method of a kind of low phase noise frequency synth 介绍了锁相环路的工作原理,分析了低功耗宽带集成锁相环芯片ADF4106的工作特性,并介绍了一种利用单片机控制该芯片的低相位噪声频率合成器的设计方法,讨论了环路滤波器的设计,为高频频率合成器的设计提供了很好的思路。
This paper introduces the principle of real-time automatic gain control based on feed forwarding technology, and the realization of the critical technologies including digital compensation and synchronization, as well as, the specific application of commu 摘要阐述了基于前馈技术的实时自动增益控制的原理及同步和数字补偿等关键技术的实现;介绍了在通信分析仪中的具体应用。
This paper introduces the principle of the ceramic microfiltration membrane in liquid, analyzes the factors that affect the flux of membrane, and summarizes the application foreground and problems that urgently need to be solved. 摘要介绍了陶瓷微滤膜的过滤机理,分析了膜污染的现状及其影响陶瓷微滤膜膜通量的因素,总结了陶瓷微滤膜的应用前景和亟待解决的问题。
This paper introduces the principles, advantages, disadvantages, affecting factors and recent progress of phytoremediation and microbial remediation on PAHs contaminated soil, and discusses the future research priorities of bioremediation. 摘要概括介绍了多环芳烃污染土壤的植物修复、微生物修复和植物-微生物联合修复的原理、优缺点、影响因素及国内外研究进展,并对生物修复的未来发展进行了展望。
This paper introduces the probability and imperilment of combustible gas explode under heat-environment, expounds the domestic and overseas research status quo on explosive characteristic of combustible gas under heat-environment, indicates the primary qu 摘要阐述了热环境下燃气爆炸发生的可能性以及危害性,介绍了国内外关于热环境下燃气爆炸特性的研究现状,指出了存在的主要问题和开展进一步研究的主要方向。
This paper introduces the problem of nonlinear programming,compares the linear programming with the nonlinear programming,and researches on several common nonlinear double-plan models. 介绍了非线性规划问题,比较了线性规划问题和非线性规划问题,研究了几种常见的非线性双方案模型。
 
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