Wake‐up circuits harvest electromagnetic energy emitted by radio devices, and they can be implemented using ultra‐high frequency (UHF) voltage multipliers. In this letter, we derive an analytical model of the UHF voltage multiplier. The model is compliant with HSPICE circuit simulations, and it allows for short design time of voltage multipliers for radio‐triggered wake‐up circuits. According to this model, we design and optimize voltage multipliers with and without junction capacitance matching. With an incident 2.4‐GHz signal of less than −30dBm power, the circuits can produce a voltage above 1 V within tens of microsecond. This dc output switches an inverter of 200MΩ load and wakes up the rest of the circuits on a wireless node. Copyright © 2010 John Wiley & Sons, Ltd.

中文翻译：

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无线电触发唤醒电路的UHF电压倍增器建模

唤醒电路收集无线电设备发出的电磁能量，并且可以使用超高频（UHF）电压倍增器来实现。在这封信中，我们得出了UHF电压倍增器的分析模型。该模型与HSPICE电路仿真兼容，并且可以缩短无线电触发唤醒电路的电压倍增器的设计时间。根据该模型，我们设计和优化了具有和不具有结电容匹配的电压倍增器。对于入射功率小于-30dBm的2.4 GHz信号，电路可在数十微秒内产生高于1 V的电压。该直流输出切换负载为200MΩ的逆变器，并唤醒无线节点上的其余电路。版权所有©2010 John Wiley＆Sons，Ltd.