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.
上传时间： 2014-12-23
上传用户：han_zh
Abstract: This application note illustrates an intermediate 8V switching power supply for an automotive radio and infotainment system.The design withstands the complete automotive input voltage range (including cold crank and load dump conditions), assuring a stable8V supply for common subsystems such as a CD driver, LCDs, and a radio module in modern infotainment systems. To avoiddisturbance in the Am and FM bands, the switching power supply runs at a fixed frequency of 2MHz, enabling an ideal solution forradio systems.
上传时间： 2013-11-20
上传用户：feitian920
覆盖8位至32位的统一结构的单片机。 Panasonic(松下)Am1(MN101)和Am3(MN103)系列单片机，对机器驱动用软件和系统需求进行分析，基于全新的概念开发而成。是一种对8位和32位采用统一结构，面向C语言，同时实现经济性和高速性的，高性能，低功耗的单片机。 Panasonic系列单片机做为高性能嵌入式控制器和多媒体装置的关键器件，在同一开发环境中开发，广泛应用于诸多领域。
上传时间： 2013-11-15
上传用户：daoyue
MSP430系列单片机的电源电压采用1.8~3.6V低电压，RAm 数据保持方式下耗电仅0.1uA，活动模 式耗电250pA/MIPS(MIPS：每秒百万条指令数)，IO输入端口的漏电流最大仅50nA。 MSP430系列单片机有独特的时钟系统设计，包括两个不同的时钟系统：基本时钟系统和锁频环(FLL 和FLL+)时钟系统或DCO 数字振荡器时钟系统。由时钟系统产生CPU和各功能模块所需的时钟，并且这 些时钟可以在指令的控制下打开或关闭，从而实现对总体功耗的控制。由于系统运行时使用的功能模块不 同，即采用不同的工作模式，芯片的功耗有明显的差异。在系统中共有种活动模式(Am)和5种低功耗模式 (LPM0~LPM4)。 另外，MSP430系列单片机采用矢量中断，支持十多个中断源，并可以任意嵌套。用中断请求将CPU 唤醒只要6us，通过合理编程，既以降低系统功耗，又可以对外部事件请求作出快速响应。
上传时间： 2014-12-01
上传用户：lbbyxmoran
制作一个正弦信号发生器的设计:（1）正弦波输出频率范围：1kHz～10MHz；（2）具有频率设置功能，频率步进：100Hz；（3）输出信号频率稳定度：优于10-2；（4）输出电压幅度：1V到5V这间；（5）失真度：用示波器观察时无明显失真。（6）输出电压幅度：在频率范围内 负载电阻上正弦信号输出电压的峰-峰值Vopp=6V±1V；（7）产生模拟幅度调制(Am)信号：在1MHz~10MHz范围内调制度ma可在30%～100%之间程控调节，步进量50%，正弦调制信号频率为1kHz，调制信号自行产生；（8）产生模拟频率调制(FM)信号：在100kHz~10MHz频率范围内产生20kHz最大频偏，正弦调制信号频率为1kHz，调制信号自行产生；（9）产生二进制PSK、ASK信号：在100kHz固定频率载波进行二进制键控，二进制基带序列码速率固定为10kbps，二进制基带序列信号自行产生；
标签： 正弦信号发生器
上传时间： 2014-12-21
上传用户：Jerry_Chow
基于单片机的汽车多功能报警系统设计The Design of Automobile Multi-function AlarmingBased on Single Chip Computer刘法治赵明富宁睡达(河 南 科 技 学 院 ，新 乡 453 00 3)摘要介绍了一种基于单片机控制的汽车多功能报警系统，它能对汽车的润滑系统油压、制动系统气压、冷却系统温度、轮胎欠压及防盗进行自动检测，并在发现异常情况时，发出声光报警。阐述了该报警系统的硬件组成及软件设计方法。关键词单片机传感器数模转换报警Abstract Am ulti-fimctiona utomobilea larnungs ystemb asedo ns inglec hipc omputerco ntorlis in torducedin th isp aper.Th eo ilpr essuero flu bricatesystem, air pressure of braking system, temperature of cooling system, under pressure of tyre and guard against theft， detected automaticaly场thesystem. Audio and visual alarms wil be provided under abnormal conditions厂The hardware composition and software design of the system， described.Keywords Singlec hipc omputer Sensor Digital-t-oanaloguec onversion Alarmin 汽车多功能报苦器硬件系统设计根据 系 统 实际需要和产品性价比，选用ATMEL公司新生产的采用CMOs工艺的低功耗、高性能8位单片机AT89S52作为系统的控制器。AT89S52的片内有8k Bytes LSP Flash闪烁存储器，可进行100(〕次写、擦除操作;256Bytes内部数据存储器(RAm);3 2 根可编程输N输出线;2个可编程全双工串行通道;看门狗(WTD)电路等。系统由传感器、单片机、模数转换器、无线信号发射电路、指示灯驱动电路、声光报警驱动电KD一9563，发出三声二闪光。并触发一个高电平，驱动无线信号发射电路。
上传时间： 2013-11-09
上传用户：gxmm
采用面向控制的Motorola DSP控制器DSP56F803,构建了一种廉价而实用的数字低中频软件电台,实现了该电台在Am、FM、SSB和FSK 4种调制方式下的互通.详细阐述了DSP56F803在构建软件电台中的设计思路和应用技巧,并给出了具体的软硬件方案.
上传时间： 2013-10-24
上传用户：libinxny
NI开发，针对信号处理、信号与系统、通讯原理等课程量身订做的课程套件，其中包括了卷积、混叠、窗函数分析、栅栏效应、IIR、FIR、Am/FM调制、倒谱等等50多个从基础到高级的信号处理知识点的演示程序。有助于教学演示使用，帮助学生理解。
上传时间： 2013-12-25
上传用户：ainimao
红外发射Am FM
上传时间： 2013-10-12
上传用户：dick_sh
发射部分采用锁相环式频率合成器技术， MC145152和MC12022芯片组成锁相环。接收部分以超大规模Am/FM立体声收音集成芯片CXA1238S为主体
上传时间： 2014-01-01
上传用户：ouyang426
