摘要
第二代身份证射频卡芯片在工作场强内不可避免地会产生噪声,可能会影响卡片与读卡器系统的正常工作。本文从理论上详细分析了卡片调制信号幅值与读卡器灵敏度的关系,提出了一种卡片噪声的检测和标定方法。这有利于合理地匹配不同厂家的卡片与读卡机具,改善兼容性,对二代证的大量应用具有重要意义。
The 2nd generation ID uses radio frequency identification (RFID) chip, it will inevitablyproduce some noise when the card is operating in the electromagnetic field emitted by thereader antenna, and the noise will perhaps influence on the communication between cardand reader. The paper theoretically analyzes the relationship between the card modulationamplitude and reader sensitivity in detail, and presents a method for noise measurementand noise scaling.
出处
《电子设计应用》
2005年第11期81-84,共4页
Electronic Design & Application World
