集成电路与嵌入式系统2026，Vol.26Issue(7)：54-64,11.DOI:10.20193/j.ices2097-4191.2025.0141
超高频RFID芯片的电磁波能量获取电路研究与实现
Design and implementation of an energy harvesting circuit for UHF RFID chips
李岩松 1方洁虹 2路旭东 1吴静珠 1肖宛昂2
作者信息
- 1. 北京工商大学 计算机与人工智能学院,北京 100048
- 2. 中国科学院半导体研究所,北京 100083||中国科学院大学 集成电路学院,北京 100049
- 折叠
摘要
Abstract
This paper presents the design and implementation of a highly efficient and stable electromagnetic wave energy harvesting cir-cuit targeting ultra-high-frequency(UHF)RFID applications.The system consists of a rectifier,a reference circuit,and a voltage regu-lator,collectively providing a reliable power supply for other chip modules.Key achievements include a differential rectifier achieving 67%power conversion efficiency(PCE)with 1.84 V output at 11 dBm input power.An ultra-low-power CMOS reference circuit with temperature coefficients of 34.9 ppm/℃(voltage)and 18.4 ppm/℃(current),and a power supply rejection ratio(PSRR)better than-93 dB at 100 Hz.An LDO-based voltage regulator exhibiting a load regulation of 41.28 mV/mA under varying load conditions.Addi-tionally,clock,reset,demodulation,and modulation circuits are integrated.The circuit is implemented in a 180 nm CMOS process,occupying a layout area of 341 μm×346 μm.Post-layout simulations indicate a total power consumption of 6 μW.Silicon measure-ments confirm that all performance metrics meet the requirements for high conversion efficiency and power supply stability in UHF RFID chips.关键词
射频识别/超高频/整流电路/基准电路/稳压电路Key words
RFID/UHF/rectifier circuit/reference circuit/voltage regulator circuit分类
信息技术与安全科学引用本文复制引用
李岩松,方洁虹,路旭东,吴静珠,肖宛昂..超高频RFID芯片的电磁波能量获取电路研究与实现[J].集成电路与嵌入式系统,2026,26(7):54-64,11.
