UHF RFID阅读器中基于ROM的成型滤波电路设计

A Design of Pulse Shapingfliter Circuit Based on ROM in UHF RFID Reader

摘要: 提出了一种应用于UHF RFID阅读器中的成型滤波电路设计方法.与传统的用升余弦滤波器实现成型滤波不同,将RFID系统中的PIE编码和成型滤波相结合,使设计的电路同时完成编码和成型滤波.与传统实现方式相比,设计的成型滤波电路的阶数、滚降系数等参数可灵活配置,电路开销小,延时短.

Abstract: A design method for pulse shaping fliter circuit appling in UHF RFID reader is prepoesd.Different from the available,the method comines the PIE coding in RFID system with pulse shaping,accomplishing PIE coding and shaping flitering together.The designed pluse shaping fliter circuit has adjustable order and ran-off,small circuit area,and short delay.