ISOStandardsISO communication standard 13.56MHzThursday, September 18, 2003Creating a contactless world1.Introduction There are four RFID ISO standards for the 13.56 MHz frequency: ISO 14443A ISO 14443B ISO 15693 ISO 18000> > > >2.A brief historyThe first standard, accepted by the ISO committee in 1997 was ISO 14443A. It was developed by Mikron, Austria, acquired by Phillips in 1996. ISO 14443A was approved by the ISO committee in 1997. ISO 14443A is particular in that it uses 100% modulation depth, meaning that the reader stops emitting the field for defined periods of time. Companies like SGS-Thomson and Motorola realized very quickly that this kind of modulation was not suited to microprocessor chip operations that require a continuous clock. They proposed a new standard using a mo……
猜您喜欢
推荐内容
开源项目推荐 更多
热门活动
热门器件
用户搜过
随便看看
热门下载
热门文章
热门标签
评论