一种无线传感器网络超低功耗接收器设计

摘要

In view of problem of influence of power consumption of wireless receiver on lifecycle of wireless sensor network,BFSK super-regenerative receiver,namely a wireless receiver with ultra-low power consumption for wireless sensor network was designed based on OOK super-regenerative receiver.Structure and circuit design of the receiver were introduced.The super-regenerative receiver employs two channels of f1 and f2 to determine output if "0" or "1" based on reserving ultra-low power consumption of OOK,and greatly improves transmission rate.The experimental results show that the sensitivity of 2.4 GHz receiver is-86 dB.m and the power consumption is only 215 μW when its transmission rate is 250 kbit/s.%针对无线接收器功耗影响无线传感器网络生命周期的问题,在OOK超再生接收器的基础上,设计了一种无线传感器网络超低功耗无线接收器——BFSK超再生接收器；介绍了该接收器的体系结构,给出了该接收器的电路设计.该接收器在保留OOK超再生接收器超低功耗的基础上,采用f1和f2两种频道来确定输出是“0”还是“1”,使得传输速率得到了较大提高.实验结果表明,当传输速率为250 kbit/s时,2.4 GHz接收器灵敏度为-86 dB·m,功耗仅为215 μW.