This paper presents an ultra low power transceiver with 900MHz BPSK downlink and 225MHz ASK uplink using injection locking based architecture for a semi-active RFID sensor node. For BPSK demodulation, two second harmonic injection locked oscillators (ILO) are employed to convert BPSK signals to ASK signals, which are then demodulated by an envelope detector to baseband. The oscillating signal at one receiver ILO also injects to another transmitter ILO for accurate carrier generation to avoid local frequency synthesis circuits at both the transmitter and receiver. Designed in a 45nm CMOS technology, post-layout simulation indicates that the transceiver achieves downlink bit rate of 10Mb/s at the sensitivity of −40dBm and uplink bit rate of 10Mb/s at the transmitted power of −24 dBm with total power consumption of 631µW.
展开▼
机译：本文介绍了具有900MHz BPSK下行链路的超低功耗收发器，使用注射锁定架构为半活动RFID传感器节点的架构进行225MHz。对于BPSK解调，采用两个第二谐波注射锁定振荡器（ILO）来转换BPSK信号以询问信号，然后通过包络检测器向基带解调。一个接收器ILO的振荡信号也注射到另一发射机ILO，用于准确的载波生成，以避免发送器和接收器处的局部频率合成电路。在45nm CMOS技术中设计，布局后仿真指示收发器在-40dBm的灵敏度下实现了10MB / s的下行链路比特率为-24 dBm的传输功率，以总功耗为10MB / s 631μw。
展开▼
