Agilent AN 154 S-Parameter Design Application Note S参数的设计与应用 The need for new high-frequency, solid-state circuitdesign techniques has been recognized both by microwaveengineers and circuit designers. These engineersare being asked to design solid state circuitsthat will operate at higher and higher frequencies.The development of microwave transistors andAgilent Technologies’ network analysis instrumentationsystems that permit complete network characterizationin the microwave frequency rangehave greatly assisted these engineers in their work.The Agilent Microwave Division’s lab staff hasdeveloped a high frequency circuit design seminarto assist their counterparts in R&D labs throughoutthe world. This seminar has been presentedin a number of locations in the United States andEurope.From the experience gained in presenting this originalseminar, we have developed a four-part videotape, S-Parameter Design Seminar. While the technologyof high frequency circuit design is everchanging, the concepts upon which this technologyhas been built are relatively invariant.The content of the S-Parameter Design Seminar isas follows:
标签: S参数
上传时间: 2013-12-19
上传用户:aa54
本书着重介绍了遗传算法及其在电力系统中的应用,为了便于读者阅读和用于解决实际问题,书中对算法的基本原理、求解过程作了详细介绍,并附有算例供参考。 本书内容包括:遗传算法的基本原理、解题过程和简单算例;电源规划数学模型和基于遗传算法的电源规划模型;输电网络规划基础知识、输电网络规划数学模型和基于遗传算法的输电网络规划模型;电力系统无功优化数学模型、无功优化方法综览及遗传算法在无功优化规划中的应用;电力市场基本概念、技术支持系统、电价及遗传算法在电力市场竞价机制中的应用等。 本书可作为高等学校电气工程及其自动化学等专业本科高年级学生和研究生的教材,还可供从事相关领域的研究人员和工程技术人员参考。
上传时间: 2014-12-31
上传用户:qingzhuhu
According to CIBC World Markets, Equity Research, theFlat Panel Display (FPD) industry has achieved sufficientcritical mass for its growth to explode. Thus, it can nowattract the right blend of capital investments and R&Dresources to drive technical innovation toward continuousimprovement in view quality, manufacturing efficiency,and system integration. These in turn are sustainingconsumer interest, penetration, revenue growth, and thepotential for increasing long-term profitability for industryparticipants. CIBC believes that three essential conditionsare now converging to drive the market forward
上传时间: 2015-01-02
上传用户:小枫残月
半導體的產品很多,應用的場合非常廣泛,圖一是常見的幾種半導體元件外型。半導體元件一般是以接腳形式或外型來劃分類別,圖一中不同類別的英文縮寫名稱原文為 PDID:Plastic Dual Inline Package SOP:Small Outline Package SOJ:Small Outline J-Lead Package PLCC:Plastic Leaded Chip Carrier QFP:Quad Flat Package PGA:Pin Grid Array BGA:Ball Grid Array 雖然半導體元件的外型種類很多,在電路板上常用的組裝方式有二種,一種是插入電路板的銲孔或腳座,如PDIP、PGA,另一種是貼附在電路板表面的銲墊上,如SOP、SOJ、PLCC、QFP、BGA。 從半導體元件的外觀,只看到從包覆的膠體或陶瓷中伸出的接腳,而半導體元件真正的的核心,是包覆在膠體或陶瓷內一片非常小的晶片,透過伸出的接腳與外部做資訊傳輸。圖二是一片EPROM元件,從上方的玻璃窗可看到內部的晶片,圖三是以顯微鏡將內部的晶片放大,可以看到晶片以多條銲線連接四周的接腳,這些接腳向外延伸並穿出膠體,成為晶片與外界通訊的道路。請注意圖三中有一條銲線從中斷裂,那是使用不當引發過電流而燒毀,致使晶片失去功能,這也是一般晶片遭到損毀而失效的原因之一。 圖四是常見的LED,也就是發光二極體,其內部也是一顆晶片,圖五是以顯微鏡正視LED的頂端,可從透明的膠體中隱約的看到一片方型的晶片及一條金色的銲線,若以LED二支接腳的極性來做分別,晶片是貼附在負極的腳上,經由銲線連接正極的腳。當LED通過正向電流時,晶片會發光而使LED發亮,如圖六所示。 半導體元件的製作分成兩段的製造程序,前一段是先製造元件的核心─晶片,稱為晶圓製造;後一段是將晶中片加以封裝成最後產品,稱為IC封裝製程,又可細分成晶圓切割、黏晶、銲線、封膠、印字、剪切成型等加工步驟,在本章節中將簡介這兩段的製造程序。
上传时间: 2013-11-04
上传用户:372825274
《西门子S7-200 PLC应用100例》主要以西门子S7-200 PLC为主体,按基础知识、扩展提高和高级应用的结构体系,由浅入深、循序渐进地介绍了PLC基本逻辑控制、高级功能模块、PLC网络、人机界面及工程应用等综合内容,并以实例描述的形式进行表达。内容既注重系统、全面、新颖,又力求叙述简练、层次分明、通俗易懂。在编写形式上,既注重从实际应用的角度出发,又涵盖理论知识的阐述,使读者能够针对各自不同的需求,按照对应的应用范例,快速找到解决实际问题的方法,同时也能加深对相关理论知识的了解,利于扩展思路,提高解决问题的效率。《西门子S7-200 PLC应用100例》可供从事PLC控制系统设计、开发的广大科技人员阅读,也可以作为各类高等学校工业自动化、电气工程及自动化、计算机应用、机电一体化等相关专业的参考资料。
上传时间: 2013-10-28
上传用户:cc1915
Abstract: The reality of modern, small form-factor ceramic capacitors is a good reminder to always readthe data sheet. This tutorial explains how ceramic capacitor type designations, such as X7R and Y5V,imply nothing about voltage coefficients. Engineers must check the data to know, really know, how aspecific capacitor will perform under voltage.
上传时间: 2013-11-04
上传用户:梧桐
(其中已经包含5个源码)所附源程序C或C++代码文件及其可执行文件 Scs.cpp 基本分类算法源程序, 输入数据文件cfile.txt,efile.txt,gfile.txt,pfile.txt ,rfile.txt,tfile.txt Sga.c 基本遗传算法源程序, 输入数据文件input,输出文件output A_life.c 基于遗传算法的人工生命模拟源程序, 输入数据文件world GA_nn.c 基于遗传算法优化神经网络结构源程序,输入数据文件sample Patmat.c 基于遗传算法提取基元图形源程序
上传时间: 2014-01-11
上传用户:13215175592
此为本人期末的课程设计VC设计:浏览器程序设计。注:本源码用Word文档存放。 简介内容:随着互联网在世界范围的广泛应用,WWW(World Wide Web,万维网)也日益成为互联网上信息交流不可缺少的工具。它是一种以HTTP(HyperText Tranfer Protocol,超文本传输协议)为基础,使用HTML(HypeText Markup Language,超文本标记语言)编写的有若干Web网页构筑而成的世界。 本课程设计要求设计类似于微软的IE浏览器,具备一个浏览器的基本功能,可以完成网上冲浪的任务。 设计 Visual C++为我们提供了一个ChtmlView类,有了它。可以很方便地设计浏览器。
上传时间: 2015-03-29
上传用户:亚亚娟娟123
JILRuntime A general purpose, register based virtual machine (VM) that supports object-oriented features, reference counting (auto destruction of data as soon as it is no longer used, no garbage collection), exceptions (handled in C/C++ or virtual machine code) and other debugging features. Objects and functions can be written in virtual machine code, as well as in C or C++, or any other language that can interface to C object code. The VM is written for maximum performance and thus is probably not suitable for embedded systems where a small memory footprint is required. Possible uses of the VM are in game development, scientific research, or to provide a stand-alone, general purpose programming environment.
标签: object-oriented JILRuntime register supports
上传时间: 2013-12-23
上传用户:cc1015285075
Client/Server版本 DBISAM compiles directly into your application with no external libraries required. Runtime package support is also provided if so desired. It has a very small footprint and does not require any forms support in Delphi 6, C++Builder 6, and Kylix 2 and higher, which helps keep the size of non-UI applications like services or web applications to a minimum.
标签: application libraries compiles directly
上传时间: 2015-04-04
上传用户:sz_hjbf