Aiming at shortcomings such as high power consumption of WSNs nodes

short battery life

an analytical model of voltage multiplier circuit is proposed which considers a number of parameters and apply to design low power consumption wake-up circuit possess limiter function by using this model. The steady state response of the model is not only consistent with the simulation results

but also can correctly demodulate the sequence that set by transmitter with an input signal of 915 MHz frequency and 10 dBm power

when short distance involved

the limiting of amplitude is about 2. 3 V and a 22 m wake-up distance

which greatly reduces the node power consumption and produces direct economic benefits.