Radio Frequency Integrated Circuit Design I enjoyed reading this book for a number of reasons. One reason is that itaddresses high-speed analog design in the context of microwave issues. This isan advanced-level book, which should follow courses in basic circuits andtransmission lines. Most analog integrated circuit designers in the past workedon applications at low enough frequency that microwave issues did not arise.As a consequence, they were adept at lumped parameter circuits and often notcomfortable with circuits where waves travel in space. However, in order todesign radio frequency (RF) communications integrated circuits (IC) in thegigahertz range, one must deal with transmission lines at chip interfaces andwhere interconnections on chip are far apart. Also, impedance matching isaddressed, which is a topic that arises most often in microwave circuits. In mycareer, there has been a GAP in comprehension between analog low-frequencydesigners and microwave designers. Often, similar issues were dealt with in twodifferent languages. Although this book is more firmly based in lumped-elementanalog circuit design, it is nice to see that microwave knowledge is brought inwhere necessary.Too many analog circuit books in the past have concentrated first on thecircuit side rather than on basic theory behind their application in communications.The circuits usually used have evolved through experience, without asatisfying intellectual theme in describing them. Why a given circuit works bestcan be subtle, and often these circuits are chosen only through experience. Forthis reason, I am happy that the book begins first with topics that require anintellectual approach—noise, linearity and filtering, and technology issues. Iam particularly happy with how linearity is introduced (power series). In therest of the book it is then shown, with specific circuits and numerical examples,how linearity and noise issues arise.
上傳時間： 2014-12-23
上傳用戶：han_zh
Abstract: The rapid build out of today's smart grid raises a number of security questions. In this article,we review two recent well-documented security breaches and a report of a security GAP. These situationsinclude a 2009 smart-meter hack in Puerto Rico; a 2012 password discovery in grid distributionequipment; and insecure storage of a private key in distribution automation equipment. For each of theseattacks, we examine the breach, the potential threat, and secure silicon methods that, as part of acomplete security strategy, can help thwart the attacks.
上傳時間： 2013-10-27
上傳用戶：tecman
Once relegated to the hinterlands of low cost indicatorlights, the LED is again in the spotlight of the lightingworld. LED lighting is now ubiquitous, from car headlightsto USB-powered lava lamps. Car headlights exemplifyapplications that capitalize on the LED’s clear advantages—unwavering high quality light output, tough-assteelrobustness, inherent high effi ciency—while a USBlava lamp exemplifi es applications where only LEDs work.Despite these clear advantages, their requirement forregulated voltage and current make LED driver circuitsmore complex than the venerable light bulb, but some newdevices are closing the GAP. For instance, the LTM®8040μModule™ LED driver integrates all the driver circuitryinto a single package, allowing designers to refocus theirtime and effort on the details of lighting design criticalto a product’s success.
上傳時間： 2013-10-16
上傳用戶：togetsomething
The MAX3243E device consists of three line drivers, five line receivers, and a dual charge-pump circuit with±15-kV ESD (HBM and IEC61000-4-2, Air-GAP Discharge) and ±8-kV ESD (IEC61000-4-2, Contact Discharge)protection on serial-port connection pins. The device meets the requirements of TIA/EIA-232-F and provides theelectrical interface between an asynchronous communication controller and the serial-port connector. Thiscombination of drivers and receivers matches that needed for the typical serial port used in an IBM PC/AT, orcompatible. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-Vsupply. In addition, the device includes an always-active noninverting output (ROUT2B), which allowsapplications using the ring indicator to transmit data while the device is powered down. The device operates atdata signaling rates up to 250 kbit/s and a maximum of 30-V/ms driver output slew rate.
標簽： MULTICHANNEL 5.5 TO RS
上傳時間： 2013-10-19
上傳用戶：ddddddd
This document was developed under the Standard Hardware and Reliability Program (SHARP) TechnologyIndependent Representation of Electronic Products (TIREP) project. It is intended for use by VHSIC HardwareDescription Language (VHDL) design engineers and is offered as guidance for the development of VHDL modelswhich are compliant with the VHDL Data Item Description (DID DI-EGDS-80811) and which can be providedto manufacturing engineering personnel for the development of production data and the subsequent productionof hardware. Most VHDL modeling performed to date has been concentrated at either the component level orat the conceptual system level. The assembly and sub-assembly levels have been largely disregarded. Under theSHARP TIREP project, an attempt has been made to help close this GAP. The TIREP models are based upon lowcomplexity Standard Electronic Modules (SEM) of the format A configuration. Although these modules are quitesimple, it is felt that the lessons learned offer guidance which can readily be applied to a wide range of assemblytypes and complexities.
上傳時間： 2013-11-20
上傳用戶：pzw421125
這是一個可以實用的通用破解軟件時間限制的程序源碼，基本原理是在軟件運行的前幾秒鐘里將系統時間設置為軟件容許你使用的可用時間，使用時將編譯的可執行文件和ExeInfo.ini文件放到要運行的軟件的目錄里，運行編譯的可執行文件就可用啟動要運行的軟件。運行前需要設置ExeInfo.ini文件，說明如下： EXENAME 為要破解的軟件的執行程序名 GAP=5000 為設置成可用時間的時間長度，毫秒為單位 INCTIME=Y 是否每次運行都增大可用時間（有些軟件會檢測可用時間必須大于上次運行時間） DATETIME=2002-5-31 16:55:12 可用時間，為軟件容許你使用的最初日期時間
上傳時間： 2015-01-13
上傳用戶：偷心的海盜
工程計算MATLAB code to calculate the reorthogonalized sine tapers input: N = the length of the time series data to be tapered p = the number of tapers requested I = the GAP structure a vector of length N I(t) = 1 if there is data at time t, t=1, ..., N I(t) = 0 if there is a GAP at time t output: X = N-by-p vector of the reorthogonalized sine taper
標簽： the reorthogonalized calculate MATLAB
上傳時間： 2013-12-17
上傳用戶：wangyi39
不用說的好，我們室主任開發的Photonics cyrestal band GAP計算Fortran代碼。注意不要忘了input文本。
標簽：
上傳時間： 2014-01-23
上傳用戶：jcljkh
Liferea is an abbreviation for Linux Feed Reader. It is a news aggregator for online news feeds. It supports a number of different feed formats including RSS/RDF, CDF and Atom. There are many other news readers available, but these others are not available for Linux or require many extra libraries to be installed. Liferea tries to fill this GAP by creating a fast, easy to use, easy to install news aggregator for GTK/GNOME. It was last updated for Liferea version 1.4.
標簽： news abbreviation aggregator for
上傳時間： 2016-12-05
上傳用戶：luopoguixiong
In the last decade the processing of polygonal meshes has emerged as an active and very productive research area. This can basically be attributed to two developments: Modern geometry acquisition devices, like laser scanners and MRT, easily produce raw polygonal meshes of ever growing complexity Downstream applications like analysis tools (medical imaging), computer aided manufacturing, or numerical simulations all require high quality polygonal meshes as input. The need to bridge the GAP between raw triangle soup data and high-quality polygon meshes has driven the research on ecient data structures and algorithms that directly operate on polygonal meshes rather than on a (most often not feasible) intermediate CAD representation.
標簽： processing productive the polygonal
上傳時間： 2017-06-03
上傳用戶：TF2015
