A 13.56 MHz RFID transponder front-end with merged load modulation and voltage doubler-clamping rectifier circuits
标签： doubler-clamping transponder modulation front-end
上传时间： 2017-01-12
上传用户：lvzhr
source for the microchip transponder for LF 125KHz.
标签： transponder for microchip source
上传时间： 2013-12-26
上传用户：anng
Radio Frequency Identifi cation (RFID) technology usesradiated and refl ected RF power to identify and track avariety of objects. A typical RFID system consists of areader and a transponder (or tag). An RFID reader containsan RF transmitter, one or more antennas and an RFreceiver. An RFID tag is simply an uniquely identifi ed ICwith an antenna.
上传时间： 2013-10-17
上传用户：lepoke
Identification is pervasive nowadays in daily life due to many complicated activities such as bank and library card reading, asset tracking, toll collecting, restricted access to sensitive data and procedures and target identification. This kind of task can be realized by passwords, bio- metric data such as fingerprints, barcode, optical character recognition, smart cards and radar. Radiofrequencyidentification(RFID)isatechniquetoidentifyobjectsbyusingradiosystems. It is a contactless, usually short distance, wireless data transmission and reception technique for identification of objects. An RFID system consists of two components: the tag (also called transponder) and the reader (also called interrogator).
标签： Processing Digital Signal RFID for
上传时间： 2020-06-08
上传用户：shancjb
一、RFID简介1.1RFID概念RFID是Radio Frequency ldentification的缩写，即射频识别，常称为感应式电子晶片或近接卡、感应卡、非接触卡、电子标签、电子条码，等等。RFID技术是一种非接触式的自动识别技术，它通过射频信号自动识别目标对象并获取相关数据，识别工作无须人工干预，可工作于各种恶劣环境。RFID技术可识别高速运动物体并可同时识别多个标签，操作快捷方便。一套完整RFID系统由Reader与transponder两部份组成，其动作原理为由Reader发射一特定频率之无限电波能量给transponder，用以驱动transponder电路将内部之IDCode送出，此时Reader便接收此IDCode。transponder的特殊在于免用电池、免接触、免刷卡故不怕脏污，且晶片密码为世界唯一无法复制，安全性高、长寿命。RFID的应用非常广泛，目前典型应用有动物晶片、汽车晶片防盗器、门禁管制、停车场管制、生产线自动化、物料管理。RFID标签有两种：有源标签和无源标签。
上传时间： 2022-06-25
上传用户：qdxqdxqdxqdx
