This paper studies the effect of amplitude and phase mismatch on the power conversion efficiency of differentially-drive rectifiers employing cross-coupled MOSFETs. The analysis begins by defining the different operational regions of the differential rectifier and how the common-mode interference resulting from amplitude and phase mismatches affects the symmetrical operation of the rectifier. A mathematical model is developed to estimate the output voltage and the power conversion efficiency under such mismatching conditions. Simulation and measurement results are provided to validate the mathematical model through the design of a three-stage differential rectifier in \(0.13\,{\upmu }\hbox {m}\) CMOS technology. Modification to the original rectifier design using a tail load topology is also proposed to reduce the effect of mismatches.

本文研究了幅度和相位失配对采用交叉耦合MOSFET的差分驱动整流器的功率转换效率的影响。分析从定义差分整流器的不同工作区域开始，以及由幅度和相位不匹配引起的共模干扰如何影响整流器的对称操作。建立了数学模型以估计在这种失配条件下的输出电压和功率转换效率。通过设计\（0.13 \，{\ upmu} \ hbox {m} \）中的三级差分整流器，提供了仿真和测量结果以验证数学模型。CMOS技术。还建议使用尾部负载拓扑对原始整流器设计进行修改，以减少失配的影响。