可用作功率放大器中电感的RFID标签天线的设计

可用作功率放大器中电感的RFID标签天线的设计

内容简介：提出一种小型化的、谐振频率为2.45 GHz的RFID标签天线的设计方法，标签天线被设计作为差分功率放大器（PA）的谐振电感.由于使用PCB偶极子天线代替两个片上的集成电感，总的放大器芯片面积降低到240μm ×70μm.对该天线进行理论计算和实物测试，结果显示实物标签天线谐振频率为2.45 GHz，PA工作于AB类型，供电电压为1.8 V，输入信号频率为2.45 GHz，在1 dB压缩点处PA输出功率为8 dBm.

Abstract：A small 2.45 GHz radio frequency identification (RFID)tag antenna is presented. The RFID tag antenna is designed as a resonance inductance of the differential power amplifier (PA). The total PA chip area is reduced greatly to only 240μm × 70μm due to the fact that a printed circuit board (PCB) dipole antenna substitutes for the two on-chip integrated inductors. The proposed design methodology is verified by comparing the calculations and measurements, which show the tag antenna works at 2.45 GHz. Operating in Class-AB with a 1.8 V supply voltage and 2.45 GHz input signal, the PA shows an output power of 8 dBm at the 1 dB compression point.

作者：于毅敏, 李建雄, 曲海涛, 毛陆虹,

关键词：射频识别, 标签天线, 功率放大器, 谐振电感,