The main objective of this book is to present all the relevant informationrequired for RF and micro-wave power amplifier design includingwell-known and novel theoretical approaches and practical design techniquesas well as to suggest optimum design approaches effectively combininganalytical calculations and computer-aided design. This bookcan also be very useful for lecturing to promote the analytical way ofthinking with practical verification by making a bridge between theoryand practice of RF and microwave engineering. As it often happens, anew result is the well-forgotten old one. Therefore, the demonstrationof not only new results based on new technologies or circuit schematicsis given, but some sufficiently old ideas or approaches are also introduced,that could be very useful in modern practice or could contributeto appearance of new ideas or schematic techniques.
标签： Amplifier Microwave Design Power
上传时间： 2013-12-22
上传用户：vodssv
This is the second half of our Transistor Circuits e-book. It contains a further 100 circuits, with many of them containing one or more Integrated Circuits (ICs).It's amazing what you can do with transistors but when Integrated Circuits came along, the whole field of electronics exploded.
上传时间： 2013-11-08
上传用户：603100257
今天，电视机与视讯转换盒应用中的大多数调谐器采用的都是传统单变换MOPLL概念。这种调谐器既能处理模拟电视讯号也能处理数字电视讯号，或是同时处理这两种电视讯号(即所谓的混合调谐器)。在设计这种调谐器时需考虑的关键因素包括低成本、低功耗、小尺寸以及对外部组件的选择。本文将介绍如何用英飞凌的MOPLL调谐芯片TUA6039-2或其影像版TUA6037实现超低成本调谐器参考设计。这种单芯片ULC调谐器整合了射频和中频电路，可工作在5V或3.3V，功耗可降低34%。设计采用一块单层PCB，进一步降低了系统成本，同时能处理DVB-T/PAL/SECAM、ISDB-T/NTSC和ATSC/NTSC等混合讯号，可支持几乎全球所有地区标准。图1为采用TUA6039-2/TUA6037设计单变换调谐器架构图。该调谐器实际上不仅是一个射频调谐器，也是一个half NIM，因为它包括了中频模块。射频输入讯号透过一个简单的高通滤波器加上中频与民间频段(CB)陷波器的组合电路进行分离。该设计没有采用PIN二极管进行频段切换，而是采用一个非常简单的三工电路进行频段切换。天线阻抗透过高感抗耦合电路变换至已调谐的输入电路。然后透过英飞凌的高增益半偏置MOSFET BF5030W对预选讯号进行放大。BG5120K双MOSFET可以用于两个VHF频段。在接下来的调谐后带通滤波器电路中，则进行信道选择和邻道与影像频率等多余讯号的抑制。前级追踪陷波器和带通滤波器的容性影像频率补偿电路就是专门用来抑制影像频率。
上传时间： 2013-11-21
上传用户：时代将军
设计模式，adapter,bridge,chain
标签： 设计模式
上传时间： 2014-01-19
上传用户：qunquan
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ** RELEASE NOTES *** *** *** *** ***** *** *** *** *** *** *** *** *** *** *** *** *** *** 1) RELEASE NOTES: --- --- ---- The release notes are now provided in PDF format in the file: \SOFTWARE\uCOS-II\DOC\RelV251.PDF 2) FEATURES SINCE V2.00: --- --- --- ----- All the features added since V2.00 are described in the PDF file: \SOFTWARE\uCOS-II\DOC\NewV251.PDF 3) EVENT FLAGS: -------------- Event Flags are discussed in AN-1007 (see www.Micrium.com/app_notes.htm) 4) QUICK REFERENCE CHART: ------------------------ A Quick Reference Chart for all the functions in V2.51 is provided in the following .PDF files: \SOFTWARE\uCOS-II\DOC\QuickRefChartV251-Color.PDF Once printed, simply FOLD the page in half and if you have a LAMINATION machine, you can protect the chart by laminating it.
上传时间： 2015-04-06
上传用户：zq70996813
YilingChangjiangRiverBridgeisa3 pylonc retecable stayedbridgewith PPWScablesystemandsingleplanestaycables.Quiteafewnewproblemswereencounteredintheerectionof themaingirderoftheBridgeowingtoutilizationofthenewstructures,workmanshipsandmaterialsonthe Bridge.Inthispaper,thetimesofcabletensioning,theinfluenceofdeadweightofstaycablesuponcable force,andmeasurementofcableforceintheconstructionmonitoringandcontrolareanalyzedinconsiderable details.
标签： PPWScablesystemandsingleplanesta YilingChangjiangRiverBridgeisa3 stayedbridgewit
上传时间： 2014-01-17
上传用户：lmeeworm
computes the eigenvalues of a symmetric tridiagonal * matrix T. The user may ask for all eigenvalues, all eigenvalues in the half-open interval (VL, VU], or the IL-th through IU-th eigenvalues.
标签： T. eigenvalues tridiagonal eigenvalue
上传时间： 2014-01-21
上传用户：CSUSheep
这是一个Linux下的USB摄像头捕捉程序，是一个调用V4L2（Video for Linux 2）非常好的例子。英文介绍为：This is a driver for the USB video bridge USBVision from Zoran/Nogatech, a USB-only cable used in many "webcam" devices. It supports streaming and capture of color or monochrome video via the Video4Linux API. Most V4L apps are compatible with it, but a few video-conferencing programs do not work yet.
上传时间： 2013-12-15
上传用户：开怀常笑
The Rayleigh Integral Method is useful in computing the acoustic properties of a flat panel radiating into a half space.
标签： properties computing Rayleigh Integral
上传时间： 2015-12-07
上传用户：youmo81
An AHB system is made of masters slaves and interconnections. A general approach to include all possible "muxed" implementation of multi layered AHB systems and arbitrated AHB ones can be thought as an acyclic graph where every source node is a master, every destination node is a slave and every internal node is an arbiter there must be one and only one arc exiting a master and one or more entering a slave (single slave verus multi-slave or arbitrated slave) an arbiter can have as many input and output connections as needed. A bridge is a special node that collapses one or more slave nodes and a master node in a new "complex" node.
标签： interconnections approach general include
上传时间： 2015-12-12
上传用户：lyy1234
