适于UHF RFID标签芯片的高性能电源恢复电路  

A High Performance Power Recovery Circuit for UHF RFID Tags

作　　者：冯筱[1] 文光俊[1] 陈健[1] 王耀[1] 刘佳欣[1] 

机构地区：[1]电子科技大学射频集成电路实验室,成都611731

出　　处：《微电子学》2012年第2期159-163,共5页Microelectronics

基　　金：广东省重大科技专项基金资助项目(2008A090300001)

摘　　要：针对ISO 18000-6C标准,提出一种双电压输出稳压电路,有效降低了整体芯片功耗。基于Cadence Spectre设计仿真平台和TSMC 0.18μm CMOS混合信号工艺进行设计并流片。在-20℃～80℃温度范围内,工艺角从ff到ss变化,仿真得到整流电路的能量转换效率(PCE)为29.88%,稳压电路的温度系数为2.4×10-5/℃,电源噪声抑制比(PSRR)为91.4dB@10Hz和34.5dB@10MHz。同时对芯片进行测试,标签可以工作的最低输入射频功率为-9.5dBm,此时整流效率可达23.1%,稳压高低两路电压输出分别稳定在1.8±0.1V和1.0±0.05V,芯片面积约为0.166mm2。A high performance power recovery circuit was designed for ISO 18000-6C standard,which was implemented in TSMC＇s 0.18 μm CMOS mixed signal process.Simulation results showed that the circuit had an energy conversion efficiency（PCE） of 29.88%,a temperature coefficient of 2.4×10-5/℃ as temperature changing from-20 ℃ to 80 ℃,and a PSRR of 91.4 dB @ 10 Hz and 34.5 dB @ 10 MHz.Measured results showed that the tag could work at a minimum input RF power of-9.5 dBm,when the rectifying efficiency reached 23.1%,and two regulated output voltages stabilized at 1.8 ± 0.1 V and 1.0 ± 0.05 V,respectively.The circuit occupies a chip area of about 0.166 mm2.

关 键 词：电源恢复电路 UHF RFID 标签 整流效率 

分 类 号：TN432[电子电信—微电子学与固体电子学]