推荐星级:
  • 1
  • 2
  • 3
  • 4
  • 5

一种适用于低频RFID标签的ASK解调电路

更新时间:2020-05-26 04:25:43 大小:1M 上传用户:六3无线电查看TA发布的资源 标签:rfid 下载积分:5分 评价赚积分 (如何评价?) 收藏 评论(0) 举报

资料介绍

提出一种适用于低频RFID标签的ASK包络检波解调电路,包括包络检波电路、低通滤波器、参考电压产生电路、比较器四个部分,其中低通滤波器使用有源器件代替无源电阻和电容,降低版图面积,并且参考电压产生电路采用阈值补偿二极管代替普通二极管和MOS二极管,消除了二极管的导通阈值电压损失。经测试,该电路能适应载波调制深度的动态范围很大,并且有较强的抗干扰能力,能满足低频RFID电子标签接收信号调制深度变化的要求。

An ASK demodulator for low-frequency RFID tag is proposed.It is composed of an envelop detector,a lowpass filter,an average voltage detector and a hysteresis comparator.In order to reduce the layout area,the active MOS devices is used instead of some passive resistors and capacitors in the low-pass filter.AV_(th) compensation diode substitutes for the common diode or diode-connect MOS device in the average voltage detector,as a result that the V_(th) of the diode turning on voltage is eliminated.The test result shows that the demodulator has very big dynamic range of ASK modulation depth and very strong anti-jamming capability,it is competent for the low-frequency RFID transponder.

部分文件列表

文件名 大小
一种适用于低频RFID标签的ASK解调电路.pdf 1M

全部评论(0)

暂无评论