The analysis and design of a semi-passive radio frequency identification（RFID） tag is presented.By studying the power transmission link of the backscatter RFID system and exploiting a power conversion efficiency mod...The analysis and design of a semi-passive radio frequency identification（RFID） tag is presented.By studying the power transmission link of the backscatter RFID system and exploiting a power conversion efficiency model for a multi-stage AC-DC charge pump,the calculation method for semi-passive tag＇s read range is proposed.According to different read range limitation factors,an intuitive way to define the specifications of tag＇s power budget and backscatter modulation index is given.A test chip is implemented in SMIC 0.18μm standard CMOS technology under the guidance of theoretical analysis.The main building blocks are the threshold compensated charge pump and low power wake-up circuit using the power triggering wake-up mode.The proposed semi-passive tag is fully compatible to EPC C1G2 standard.It has a compact chip size of 0.54 mm^2,and is adaptable to batteries with a 1.2 to 2.4 V output voltage.展开更多
设计了一种应用于唤醒电路、能够完全集成的33.7 k Hz RC振荡器。该振荡器采用了由NMOS电压跟随器和一个由PTAT基准电流源提供偏置的快速翻转复制反相器构成的局部电压调整电路。该技术能够降低振荡器核心电路的功耗,降低核心电路对电...设计了一种应用于唤醒电路、能够完全集成的33.7 k Hz RC振荡器。该振荡器采用了由NMOS电压跟随器和一个由PTAT基准电流源提供偏置的快速翻转复制反相器构成的局部电压调整电路。该技术能够降低振荡器核心电路的功耗,降低核心电路对电源电压变化的灵敏度。振荡器基于NEX chip 0.15μm CMOS工艺进行设计,在-40~80℃的温度范围内最大相对频率变化约为0.353%,在-40~40℃的温度范围内相对频率变化约为±0.62‰,能够适应国内各地区的应用环境。展开更多
The paper proposes a low power non-volatile baseband processor with wake-up identification(WUI) receiver for LR-WPAN transceiver.It consists of WUI receiver,main receiver,transmitter,non-volatile memory(NVM) and power...The paper proposes a low power non-volatile baseband processor with wake-up identification(WUI) receiver for LR-WPAN transceiver.It consists of WUI receiver,main receiver,transmitter,non-volatile memory(NVM) and power management module.The main receiver adopts a unified simplified synchronization method and channel codec with proactive Reed-Solomon Bypass technique,which increases the robustness and energy efficiency of receiver.The WUI receiver specifies the communication node and wakes up the transceiver to reduce average power consumption of the transceiver.The embedded NVM can backup/restore the states information of processor that avoids the loss of the state information caused by power failure and reduces the unnecessary power of repetitive computation when the processor is waked up from power down mode.The baseband processor is designed and verified on a FPGA board.The simulated power consumption of processor is 5.1uW for transmitting and 28.2μW for receiving.The WUI receiver technique reduces the average power consumption of transceiver remarkably.If the transceiver operates 30 seconds in every 15 minutes,the average power consumption of the transceiver can be reduced by two orders of magnitude.The NVM avoids the loss of the state information caused by power failure and energy waste caused by repetitive computation.展开更多
针对有源电子标签及传感器节点低功耗唤醒模块的需求,设计了一种基于微波整流的半导体开关无线控制方法。通过微波整流之后的直流输出电压来控制半导体开关的状态,进而控制唤醒电路的直流电源通断,利用半导体开关关断状态下漏电流极低...针对有源电子标签及传感器节点低功耗唤醒模块的需求,设计了一种基于微波整流的半导体开关无线控制方法。通过微波整流之后的直流输出电压来控制半导体开关的状态,进而控制唤醒电路的直流电源通断,利用半导体开关关断状态下漏电流极低的特点,确保设备在休眠期达到极低功耗,从而延长标签及节点电源的工作时间。文中的微波整流设计主要以实现最大化直流输出电压为目标,整流天线部分采用双单元的整流阵列设计。仿真与测试结果表明,每一路天线接收到-18 d Bm的射频功率时,直流输出电压可达到典型的CMOS开关控制所需的最低电平(1 V)。展开更多
A fully integrated super-regenerative wake-up receiver for wireless body area network applications is presented. The super-regeneration receiver is designed to receive OOK-modulated data from the base station. A low p...A fully integrated super-regenerative wake-up receiver for wireless body area network applications is presented. The super-regeneration receiver is designed to receive OOK-modulated data from the base station. A low power waveform generator is adopted both to provide a quench signal for VCO and to provide a clock signal for the digital module. The receiver is manufactured in 0.18 μm CMOS process and the active area is 0.67 mm^2.It achieves a sensitivity of -80 d Bm for 10^（-3）BER with a data rate of 200 kbps. The power consumption of the super-regenerative wake-up receiver is about 2.16 m W.展开更多
基金Project supported by the Ministry of Science & Technology of China(No.2008BAI55B07)the State Key Laboratory of ASIC and System,Fudan University,China(No.09MS009).
文摘The analysis and design of a semi-passive radio frequency identification（RFID） tag is presented.By studying the power transmission link of the backscatter RFID system and exploiting a power conversion efficiency model for a multi-stage AC-DC charge pump,the calculation method for semi-passive tag＇s read range is proposed.According to different read range limitation factors,an intuitive way to define the specifications of tag＇s power budget and backscatter modulation index is given.A test chip is implemented in SMIC 0.18μm standard CMOS technology under the guidance of theoretical analysis.The main building blocks are the threshold compensated charge pump and low power wake-up circuit using the power triggering wake-up mode.The proposed semi-passive tag is fully compatible to EPC C1G2 standard.It has a compact chip size of 0.54 mm^2,and is adaptable to batteries with a 1.2 to 2.4 V output voltage.
基金supported in part by the National Natural Science Foundation of China(No.61306027)
文摘The paper proposes a low power non-volatile baseband processor with wake-up identification(WUI) receiver for LR-WPAN transceiver.It consists of WUI receiver,main receiver,transmitter,non-volatile memory(NVM) and power management module.The main receiver adopts a unified simplified synchronization method and channel codec with proactive Reed-Solomon Bypass technique,which increases the robustness and energy efficiency of receiver.The WUI receiver specifies the communication node and wakes up the transceiver to reduce average power consumption of the transceiver.The embedded NVM can backup/restore the states information of processor that avoids the loss of the state information caused by power failure and reduces the unnecessary power of repetitive computation when the processor is waked up from power down mode.The baseband processor is designed and verified on a FPGA board.The simulated power consumption of processor is 5.1uW for transmitting and 28.2μW for receiving.The WUI receiver technique reduces the average power consumption of transceiver remarkably.If the transceiver operates 30 seconds in every 15 minutes,the average power consumption of the transceiver can be reduced by two orders of magnitude.The NVM avoids the loss of the state information caused by power failure and energy waste caused by repetitive computation.
文摘针对有源电子标签及传感器节点低功耗唤醒模块的需求,设计了一种基于微波整流的半导体开关无线控制方法。通过微波整流之后的直流输出电压来控制半导体开关的状态,进而控制唤醒电路的直流电源通断,利用半导体开关关断状态下漏电流极低的特点,确保设备在休眠期达到极低功耗,从而延长标签及节点电源的工作时间。文中的微波整流设计主要以实现最大化直流输出电压为目标,整流天线部分采用双单元的整流阵列设计。仿真与测试结果表明,每一路天线接收到-18 d Bm的射频功率时,直流输出电压可达到典型的CMOS开关控制所需的最低电平(1 V)。
基金Project supported by the National Basic Research Program of China(No.2014CB744600)the National Natural Science Foundation of China(No.61474120)
文摘A fully integrated super-regenerative wake-up receiver for wireless body area network applications is presented. The super-regeneration receiver is designed to receive OOK-modulated data from the base station. A low power waveform generator is adopted both to provide a quench signal for VCO and to provide a clock signal for the digital module. The receiver is manufactured in 0.18 μm CMOS process and the active area is 0.67 mm^2.It achieves a sensitivity of -80 d Bm for 10^（-3）BER with a data rate of 200 kbps. The power consumption of the super-regenerative wake-up receiver is about 2.16 m W.
