摘要
天线设计技术是射频识别的关键技术,本文确定了基于最大磁感应强度B、最大天线的耦合因子k和最小安培匝数意义下的最优天线半径。并采用优化设计的方法确定了天线的其他参数。对射频识别的天线设计从电磁场理论角度进行了研究,使天线耗材少,能耗低,传输效率高。其结果与实际系统中根据经验选取天线线圈半径相一致。其研究结果与实验进行的125KHz实际系统的天线设计结果吻合。
The design of antenna in radio frequency identification（RHD） is one of the important problems. This paper presents an optimal approach that may resolve this problem. The work includes the antenna＇s optimum radius in terms of maximized magnetic induction B, maximized antenna coupling coefficient k and minimized ampere turn. The other parameters of RFID antenna are presented too. The antenna uses less material and consumes low power. It transports in high efficiency. The result is the same as the practical use. This method is successfully used in 125 kHz system.
出处
《电子器件》
CAS
2008年第2期564-567,共4页
Chinese Journal of Electron Devices
基金
国家发改委下一代互联网示范工程(CNGI-04-10-1D)
关键词
射频识别(RFID)
优化设计
天线
识别距离
低功耗
radio frequency identification（RFID）
antenna
optimization design
identification distance
low power-consumption
