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Description: 研究RFID应用中各种天线的设计，包括参数的设置
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Size: 790950 |
Author: wfy |
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Description: A system simulation environment in Matlab/Simulink of RFID is constructed in this paper.
Special attention is emphasized on the analog/RF circuit.Negative effects are concerned in the system
model,such as phase noise of the local oscillator,TX-RX coupling,reflection of the environment,
AWGN noise,DC offset,I/Q mismatch,etc.Performance of the whole system can be evaluated by
changing the coding method,parameters of building blocks,and operation distance.Finally,some
simulation results are presented in this paper.
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Size: 2099200 |
Author: liulang |
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Description: RC500和AT89S52电路用于RFID-RC500 and AT89S52 circuit for RFID
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Size: 192512 |
Author: wuguodong |
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Description: 一个完整的读卡的C语言程序，包括扩展电路，及应用！-Reader a complete C-language program, including expansion of the circuit, and application!
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Size: 2048 |
Author: zxp |
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Description: RFID读卡芯片EM4095的数据手册-EM4095 chip RFID reader data sheet
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Size: 196608 |
Author: 王慎 |
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Description: 超高频RFID标签的电路设计
超高频RFID标签的电路设计
915MHZ-UHF RFID tag circuit design UHF RFID tag circuit design 915MHZ
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Size: 332800 |
Author: ys |
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Description: T5557是兼容e555x的RFID芯片，但又具备和e555x系列芯片不同的新性能。文章着重介绍了T5557的新特点及工作原理，并对其RSK工作模式下读写器的电路设计作了分析，最后给出了D类功放和FSK解调的应用电路。-T5557 is compatible e555x the RFID chip, but with different chips and e555x series of new features. T5557 article highlights the new features and working principle and its mode RSK reader an analysis of the circuit design, and finally give the Class D amplifier and the FSK demodulator circuit applications.
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Size: 519168 |
Author: sheriflee |
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Description: 研究RFID应用中各种天线的设计，包括参数的设置-Zhan Kavalan中using RFID Beckmannia kneeling Gou cavity chirpy chat线few ， Women mamma cavity clean bowl from the EC
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Size: 790528 |
Author: wfy |
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Description: 超高频无源RFID 标签的一些关键电路的设计-Passive UHF RFID labels some of the key circuit design
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Size: 500736 |
Author: hegs |
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Description: microchip的13.56M RFID天线设计资料，很不错，值得借鉴。
-13.56M RFID antenna the microchip design information, it is good, is worth learning from.
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Size: 793600 |
Author: 黎歌 |
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Description: RFID设计文档，包含详细的射频天线和模拟前端设计电路，设计流程和仿真结果-RFID design document, contains a detailed radio frequency antenna and analog front-end circuit design, design flow and simulation results
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Size: 1514496 |
Author: 张弥 |
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Description: This source is 125KHz RFID reader for EM4095 as ATMEGA8-16AU. Leeky is really my id AVRfreaks.net and this source is mine,
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Size: 8192 |
Author: acleds |
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Description: 运用保密性好且物美价廉的RFID技术实现预付费电能表! 着重介绍 RFID本身及其与电能表的接口作为核心部分的电能表采用全数字电路来实现有效地提高了测量精度! 同时采用可视化的液晶屏和交互式的键盘等改善了人机界面和电能表的集合改变了现在的电表付款方式可以提高电力部门的工作效率安全可靠! 是当前电子式电能表的一种发展方向-Good use of confidentiality and cost-effective RFID technology implementation prepaid energy meter! Focuses on RFID itself and its interface with the power meter as a core part of the power meter using an all-digital circuit to enhance the effective implementation of the measurement accuracy! Simultaneously use Visualization of the LCD screen and keyboard, such as an interactive human-machine interface and improved the collection of energy meter changed the Pay Now meter the electricity sector can improve the efficiency of the safe and reliable! are the current Electronic Energy Meter a direction of development
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Size: 150528 |
Author: linfeng |
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Description: 密勒码最初用于气象卫星和磁记录，现在也用于低速基带数传机。本文件是密勒码解码源码。-For wireless RFID code decoding circuit of the Miller
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Size: 2048 |
Author: yu |
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Description: RFID读卡程序。硬件工作原理：基站在上电的情况下通过耦合线圈发射频率为125k的正弦波，ID卡的耦合线圈在125k的正弦波的激励下产生感应电动势，它为整个ID卡提供电源。ID卡通过调制电路根据其卡类的数据使ID卡的耦合线圈也发出正弦波，基站的耦合线圈接收到，根据它与125k波的不同来表示不同的数据。并将其通过DATA端以曼切斯特码的形式输出。-RFID reader program. Hardware it works: At the base station on the case of electricity through the coupling coil 125k launch the sine wave frequency, ID card at the coupling coil 125k inspired by the sine wave generated electromotive force sensors, which provide power throughout the ID card. ID card through the modulation circuit in accordance with its type of data card ID card issued sinusoidal coupling coil, the base station to receive the coupling coil, in accordance with the different wave 125k to express different sets of data. And Manchester, through DATA-side code in the form of output.
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Size: 3072 |
Author: bo |
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Description: em4095 rfid circuit 125KHz-134 KHz, Read write analog front end for RFID basestation-em4095 rfid circuit 125KHz-134 KHz, Read write analog front end for RFID basestation
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Size: 56320 |
Author: volkan |
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Description: 电子标签天线的研究与设计
RFID技术的构成和应用，天线的基本参数等概念。
运用电磁场理论，天线理论，电路理论分析了电子标签天线与电子标签芯片
之间的阻抗匹配问题，指出电子标签带宽的制约因数，阅读距离的制约因数
-RFID antenna research and design of RFID technology, the composition and application of concepts such as basic parameters of the antenna. The use of electromagnetic theory, antenna theory, circuit theory analysis of the electronic tag antenna and electronic tag chip impedance matching between the question and pointed out that the bandwidth constraints of RFID factor, read from the constraints of factor
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Size: 4869120 |
Author: wupiao |
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Description: H4100 125kHz RFID卡解码程序，适用2270B或者简易电路输入，适用AVR单片机-H4100 125kHz RFID card decoding process, for 2270B or a simple circuit input, for AVR Microcontroller
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Size: 3072 |
Author: 赖恭平 |
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Description: 本文首先研究了IsO／IECl8000．6标准中A、B两类短程通讯的前向链路与返回
链路的数据编码方式，对(FMO)双相间隔编码、(PIE)脉冲间隔编码、曼切斯特码
的编解码方式和技术参数进行了深入的分析，并利用FPGA实验平台对这三种编
码的编、解码电路进行了设计和仿真。然后对UHF RFID系统的差错控制技术原理
进行了探讨，重点研究了ISo／IECl8000．6标准中采用的数据保护与校验技术，即
循环冗余校验(CRC)技术。分析了基于线性反馈移位寄存器(LFSR)实现CRC的电
路，从理论和实现两个方面对其中存在的问题提出了解决办法，设计了一种改进
型线性反馈移位寄存器电路来实现循环冗余校验。对于要求CRC运算速度高的系
统，本文利用了递归的算法设计了一种新型的并行CRC电路。最后本文提出了一
种新颖的UHF RFID系统数字基带电路，区别于一般数字基带电路的地方是：在编
解码模块和CRC模块之间加入了卷积编码和维特比译码模块。利用卷积码优良的
纠错能力，来解决UHF RFID系统在电磁干扰严重的环境中识别率低、通信速度慢
的问题，效果良好。-The first，this paper investigates the f．0rward link and retum link data encodlng
method in short range communication types A and B in ISO／IEC 1 8000-6，and deeply
analyzes encoding method and technical parameters of Bi—Phase Space(FMO)coding，
Pulse IntervaI Encoding(PIE)coding and Manchester coding．We also designed and
simulated code circuits and decode circuits of the three encoding method by FPGA
experiment platfoml． The second， We discussed the technical principle of error
control of the UHF RFID system，especially for the techn0109y of data Verification
肌d calibration，namely cyclic redundancy check that used in IS0／IEC 1 8000·6·The
circuits of CRC based on Linear Feedback Shin Register(LSFR)are analyzed行om
theonr and realization，and some means of solVing problems are put fon)Irard，then an
improved LSFR circuit to implement CRC is designed．For some require fast CRC
calculation system，we designed a noVel parallel CRC circuit by using recurslVe
fomlula．In the end，we put forw
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Size: 4366336 |
Author: HY jian |
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Description: 基于MSP430和CC1100的射频采集电路的系统设计-Based on MSP430 and CC1100 RF acquisition circuit system design
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Size: 1404928 |
Author: 李 |
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