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A.P.

  • A novel met hod t o p artially compensate sigma2delta shap ed noise is p rop osed. By injecting t he

    A novel met hod t o p artially compensate sigma2delta shap ed noise is p rop osed. By injecting t he comp en2 sation cur rent int o t he p assive loop f ilte r during t he delay time of t he p hase f requency detect or ( PFD) , a maximum reduction of t he p hase noise by about 16dB can be achieved. Comp a red t o ot he r compensation met hods , t he tech2 nique p rop osed he re is relatively simple and easy t o implement . Key building blocks f or realizing t he noise cancel2 lation , including t he delay va riable PFD and comp ensation cur rent source , a re sp ecially designed. Bot h t he behavior level and circuit level simulation results a re p resented.

    标签: sigma2delta compensate injecting artially

    上传时间: 2013-12-18

    上传用户:qlpqlq

  • Handbook of Applied Cryptography, by A. Menezes, P. van Oorschot, and S. Vanstone, CRC Press, 1996

    Handbook of Applied Cryptography, by A. Menezes, P. van Oorschot, and S. Vanstone, CRC Press, 1996

    标签: A. P. S. Cryptography

    上传时间: 2014-01-22

    上传用户:playboys0

  • ·A·S·P·考试系统+论文······

    ·A·S·P·考试系统+论文······

    标签: 论文

    上传时间: 2017-03-17

    上传用户:上善若水

  • A Convex Hull is the smallest convex polygon that contains every point of the set S. A polygon P is

    A Convex Hull is the smallest convex polygon that contains every point of the set S. A polygon P is convex if and only if, for any two points A and B inside the polygon, the line segment AB is inside P. One way to visualize a convex hull is to put a "rubber band" around all the points, and let it wrap as tight as it can. The resultant polygon is a convex hull.

    标签: polygon S. the contains

    上传时间: 2013-12-23

    上传用户:it男一枚

  • 数字基带传输系统的MATLAB仿真实现 function [sampl,re_sampl]=system_1(A,F,P,D,snr,m,N) 输入变量A ,F,P分别为输入信号的幅度、频率和相

    数字基带传输系统的MATLAB仿真实现 function [sampl,re_sampl]=system_1(A,F,P,D,snr,m,N) 输入变量A ,F,P分别为输入信号的幅度、频率和相位,D为量化电平数,snr 为信道信噪比,N为D/A转换时的内插点数;输出变量sampl为抽样后的输入 信号,re_sampl为恢复出的输入信号。 数字基带传输系统的MATLAB仿真实现 [sampl,quant,pcm]=a_d_1(A,F,P,D) [changed_ami]=signal_encod_1(pcm) [ami_after_channel]=channel_1(changed_ami,snr) [adjudged_ami]=adjudg_1(ami_after_channel,m) re_pcm=signal_decod_1(adjudged_ami) [re_voltag,re_sampl,re_sampl1]=d_a_1(re_pcm,sampl,D,N)

    标签: function re_sampl MATLAB system

    上传时间: 2017-04-21

    上传用户:tzl1975

  • code củ a dsp 30f4012 viế t cho giao tiế p LCD

    code củ a dsp 30f4012 viế t cho giao tiế p LCD

    标签: 7871 30f4012 code 7911

    上传时间: 2017-06-17

    上传用户:koulian

  • 采用FPGA模拟高动态GPS信号源中的C/A码产生器

    本文:采用了FPGA方法来模拟高动态(Global Position System GPS)信号源中的C/A码产生器。C/A码在GPS中实现分址、卫星信号粗捕和精码(P码)引导捕获起着重要的作用,通过硬件描述语言VERILOG在ISE中实现电路生成,采用MODELSIM、SYNPLIFY工具分别进行仿真和综合。

    标签: FPGA GPS 模拟 动态

    上传时间: 2013-08-31

    上传用户:pwcsoft

  • 常用D/A转换器和A/D转换器介绍

      常用D/A转换器和A/D转换器介绍   下面我们介绍一下其它常用D/A转换器和 A/D 转换器,便于同学们设计时使用。   1. DAC0808   图 1 所示为权电流型 D/A 转换器 DAC0808 的电路结构框图。用 DAC0808 这类器件构 成的 D/A转换器,需要外接运算放大器和产生基准电流用的电阻。DAC0808 构成的典型应用电路如图2 所示。

    标签: 转换器

    上传时间: 2014-12-23

    上传用户:zhenyushaw

  • 高精度Delta-Sigma A/D转换器原理及其应用

    本次在线座谈主要介绍TI的高精度Delta-Sigma A/D转换器的原理及其应用,Delta-Sigma A/D转换器在称重仪器中,大量采用比例测量方法。

    标签: Delta-Sigma 高精度 转换器

    上传时间: 2013-10-17

    上传用户:zhqzal1014

  • 安富利:基于MSP430FE427(A) 模块的电度表解决方案(英文版)

      Avnet Design Service电源实验室开发出基于MSP430FE427(A) 模块的电度表解决方案:   (1)电压 (90Vac~264Vac) 与电流 (10Arms) 测量范围宽   (2)电度表是一种测量用电量的设备   (3)LCD显示电量 (kWh)、功率 (W)、电压 (V)、电流 (A)、功率因数(PF) 与温度 (oC) 测量值   (4)264Vac/63Hz与140mW @90Vac/47Hz条件下,无负载功耗低于300mW   (5)测量精度高达2%

    标签: MSP 430 427 FE

    上传时间: 2013-10-13

    上传用户:cjf0304