In the paper , the author not only completes the partitions of ip in the responder , but he realizes the design of the back - end ( exclusion the ip module of rf ) ip modules design based on mcu ( 89c51 ) 本论文着重从ic设计技术前沿的soc设计所涉及的ip重用设计，研究了2 . 4ghzrfid系统中应答器的soc中ip的划分，重点完成了以89c51mcu为基础的应答器后端(除rf前端ip外) ip的设计。
The rfid technology introduces the lsi , identification and computer communication technology . it is made up of the reader and transponder mounted on the carrier and realizes the contactless identification and data information exchange of the carrier 射频识别( rfid )技术采用大规模集成电路技术、识别技术、计算机及通信技术,通过阅读器和安装在载体上的应答器( rfid卡)构成rfid系统,实现对载体的非接触的识别和数据信息交换。
The main work of this paper is focused on the design of the latter ip module . in reader software ip design , the method of crc was used to ensure the communication reliability between the reader and responder . and the des encryption is applied to security communication 在阅读器ip软件设计中采用crc校验码检错、出错重发相结合的方法来确保应答器与阅读器的通信可靠；将des加密算法应用于系统的安全通信，最终实现了本文的设计方案。
Thirdly , the relative theories of the limiter and rectifier are studied . in order to make the passive responder work stably under the conditions of large dynamic range of the receiving power and the high efficiency requirement , a two - stage limiter circuit and a voltage - doubler rectifier circuit with several diodes parallel are developed 3 ,对应答器地面装置中的能量转换电路进行了研究,针对应答器地面装置接收到的载波功率具有大动态范围的特点以及系统能量转换的高效率要求,设计了一种两级级联二极管限幅电路和多管并联的倍压整流电路。
For data integrity , it exists in two problems , external interference and collisions that multi - tags occupying a single channel and transmitting their data lead into at the same time . we use data check and anti - collision algorithms to resolve those two problems respectively 本文分别对这两个方面进行了研究，针对数据传输的完整性，主要存在两个方面的问题，外界的干扰和多个应答器同时占用信道发送数据发生冲突以致碰撞，运用数据校验和防碰撞算法分别解决这两个问题。
A broadband matching network is designed for the broadband signal antenna , using one of the broadband matching technologies - real frequency theory . secondly , the relative theory , design and emulate of the power amplifier are presented , and a power amplifier of high output power and high efficiency is designed , according to the standards of the responder system 2 ,讨论了功率放大器的相关理论、设计、仿真及实现,主要包括:功率放大器的稳定性分析、负载线法分析以及功率放大器工作类别分析;根据应答器系统指标,完成了系统中大功率高效率的能量载波功率放大器的设计。
Due to the data transmission characteristics between tags and reader , space division multiple access ( sdma ) , frequency division multiple access ( fdma ) and code division multiple access ( cdma ) are applied in a limited way in rfid system . therefore , time division multiple ( tdma ) has been generally accepted . according to tdma , there are aloha protocol , s - aloha , binary - tree protocol , clipped binary - tree protocol and others 解决这个问题必须要用到多路存取法，针对射频识别系统中阅读器与应答器之间的通信特点，空分多路法、频分多路法、码分多路法在rfid系统中应用都受到一定的限制，只能应用到一些特定的场合，一般采用时分多路法，按照时分多路法的算法有aloha算法、时隙aloha算法、二进制树型搜索算法、修剪枝的二进制树型搜索算法等防碰撞算法协议，分析了各自特点以及存在的缺点。
Based on an analysis on the present situation and development of three kinds of signal systems ( the point system based on interrogator responsor , the quasi - moving block system based on digital track circuit and the moving block system based on wireless data transmission ) in urban rail transit , some suggestions on the localization of signal system of urban rail transit are put forward 摘要在分析三种城市轨道交通信号系统制式（基于查询应答器的点式系统、基于数字轨道电路的?移动闭塞和基于无线数据传输的移动闭塞）的现状和发展基础上，对实现我国城市轨道交通信号系统国产化提出建议。
The spot responder system which is the necessary part of ctcs is analyzed in the dissertation and three key technologies of the channel in the responder system are researched . firstly , a new kind of rectangular plate magnetic inductive loop antenna is designed to transmit the power frequency . researching the near field inter - inductive characters , the relationship among the inductive efficiency , the perimeter and the conductor width of the antenna is found out 本文在对ctcs中的点式应答器系统原理及组成进行分析和消化的基础上,对系统中信道的几个关键技术进行了详尽的研究,主要分为三个方面: 1 ,提出并研制了新型的片式环形磁感应天线,并对传输能量载波的天线的近场互感特性进行了分析,得到互感效率随天线的周长大小以及导带宽度的变化规律,并通过计算机仿真和试验对天线的近场波瓣图进行了研究;通过分析宽带匹配技术中的实频法理论,设计了信号载波天线的宽带匹配网络。
This disseration focuses on a sub - project of the spot responder in the china train control system ( ctcs ) . the design objective is to reseach and implement the fsk signal transmitter and receiver with low power cost and high reliability , according to the fsk signal characteristics in the spot responder system 本论文所研究的课题是中国铁路控制系统( chinatraincontrolsystem , ctcs )点式应答器的子课题,其目标是根据列车控制信号的特点,对点式应答器系统中的瞬时、低功耗、高可靠性的fsk信号发射机和fsk信号接收机的关键技术进行研究与实现。
