面向低强度无线网络信号接收器的设计与实现

摘要

The low intensity wireless network signal receivers designed previously can't coordinate the transmission property of the low intensity wireless network and environmental disturbance effectively,which leads to the incomplete receiving signal and short receiving distance,therefore a high performance signal receiver suitable for low intensity wireless network was designed.It is composed of the reference source circuit,dynamic gain amplifier and signal detection circuit.The reference source circuit adjusts the circuit parameters of the dynamic gain amplifier and signal detection circuit automatically,and maintains the regular work of the receiver.The dynamic gain amplifier executes the automatic adjustment of the gain signal of the low intensity wireless network,and transmits the adjusted signal to the detection circuit for waking up.After successful waking up,the signal detection circuit transmits all the signals in the circuit and circuit parameters to the reference source circuit for processing.The output signal of the reference source circuit is the final signal received by users.The receiving spectrum estimation function of the receiver and signal receiving flow chart of the low intensity wireless network are given in the third part of this paper.The experimental verification result shows that the receiver has strong receiving integrity,and long receiving distance.%以往设计的低强度无线网络信号接收器,均无法有效对环境干扰与低强度无线网络的传输性质进行协调,导致接收信号不完整、且接收距离较近,故设计高性能的面向低强度无线网络信号接收器,其由基准源电路、动态增益放大器和信号检测电路组成.基准源电路自动校准动态增益放大器和信号检测电路产生的电路参数,维持接收器的正常工作.动态增益放大器对低强度无线网络信号进行自动增益调节,经其增益调节后的低强度无线网络信号将传输给信号检测电路进行唤醒.唤醒成功后,信号检测电路将电路中的所有信号和电路参数传输给基准源电路进行处理,基准源电路的输出信号即为用户接收到的最终信号.信号接收器的实现部分给出了接收器的接收谱估计函数、低强度无线网络信号接收流程图.经实验验证可知,所设计的接收器接收完整性较强,并拥有较远的接收距离.