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首页> 外文期刊>Japanese journal of applied physics >Differential-drive CMOS rectifier with photovoltaic-assist and self-Vth-cancellation schemes for high power conversion efficiency under low input power conditions
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Differential-drive CMOS rectifier with photovoltaic-assist and self-Vth-cancellation schemes for high power conversion efficiency under low input power conditions

机译:具有光伏辅助和自vth消除方案的差分驱动CMOS整流器,用于低输入功率条件下的高功率转换效率

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摘要

In this study, a differential-drive CMOS RF rectifier equipped with photovoltaic assistance and self-Vth-cancellation (SVC) mechanism has been developed for efficient energy harvesting from ambient radio waves. In addition to the differential-drive dynamic biasing, in which by dynamically biasing the MOSFET gates with differential input signal, both on-resistance and reverse leakage current of the MOSFET are reduced and high power conversion efficiency (PCE) can be achieved, the combination of SVC technology and photovoltaic assist technology allows further improvement of the PCE under low input power conditions. As a result, the PCE of 38.5% was achieved at an input power level of -22 dBm, a frequency of 1 GHz, an output load resistance of 10 k omega, and a light irradiance of 1 W m(-2).
机译:在该研究中,已经开发出配备有光伏辅助和自vth消除(SVC)机构的差动驱动CMOS RF整流器,用于从环境无线电波的有效能量收集。 除了差分驱动动态偏置之外,通过用差分输入信号动态偏置MOSFET栅极,可以降低电阻和MOSFET的导通电阻和反向漏电流,并且可以实现高功率转换效率(PCE),组合 SVC技术和光伏辅助技术允许在低输入功率条件下进一步改善PCE。 结果,在-22dBm的输入功率水平,1GHz的频率下实现了38.5%的PCE,输出负载电阻为10kΩ,以及1w m(-2)的光辐照度。

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