CAJ | 학술논문

提出一种新的低成本射频识别标签模拟前端,同时兼容ISO 14443A和ISO 14443B协议.相比于传统模拟前端,本设计采用面积更小的单线圈天线代替传统大面积多圈天线,使得标签的封装成本大幅度降低.考虑到单线圈天线的性能降低,设计了一个新的具有高效率低启动电压的电荷泵整流电路.整体电路采用SMIC 0.18μm EEPROM工艺实现,测试结果显示电荷泵驱动120kΩ等效负载时,整流效率达到36%,输入交流幅度仅0.5V时,输出电压达到电路工作电压1V.标签的阅读距离可以达到22cm.
제출일충신적저성본사빈식별표첨모의전단,동시겸용ISO 14443A화ISO 14443B협의.상비우전통모의전단,본설계채용면적경소적단선권천선대체전통대면적다권천선,사득표첨적봉장성본대폭도강저.고필도단선권천선적성능강저,설계료일개신적구유고효솔저계동전압적전하빙정류전로.정체전로채용SMIC 0.18μm EEPROM공예실현,측시결과현시전하빙구동120kΩ등효부재시,정류효솔체도36%,수입교류폭도부0.5V시,수출전압체도전로공작전압1V.표첨적열독거리가이체도22cm.
A new,low-cost RFID tag analog front-end compatible with ISO 14443A and ISO 14443B is presented. By sub- stituting conventional multi-circle antenna with single-circle antenna, the package cost of the tag is greatly reduced. Based on this exasperate antenna pcrformance,a new rectifier with high power conversion efficiency and low turn-on voltage is presented. The circuit is implemented in an SMIC 0.18μm EEPROM process. Measurement results show that with a 120kΩ load, the power conversion efficiency reaches as high as 36%. For a sinusoidal wave with magnitude of 0.5V, the output DC voltage reaches 1V,which is high enough for RFID tags.The read distance is as far as 22cm.