A wide-dynamic range high-efficiency differential RF-to-DC power converter for wireless power transfer (WPT) applications is presented. The architecture offers high power conversion efficiency (PCE) over a wide range of input powers by employing cross-coupled high-threshold rectifying devices with stacking diodes. The proposed rectifier uses the adaptive biasing technique to control the rectifying devices’ conduction and minimizes the leakage current of the feedback diodes by utilizing the dynamic body biasing. Compared to the conventional cross-coupled rectifier, the proposed rectifier has a 9.4×better dynamic range. A prototype of the proposed rectifier is implemented in 65-nm CMOS technology and occupies an area of 0.0148mm². The rectifier achieves −18.1dBm sensitivity for 1V output and a 79.4% peak PCE. A dynamic range of 17.3dB is achieved at the 433MHz in the Industrial Scientific Medical band (ISM band) with a 100-KΩ load. Furthermore, the proposed design offers a peak PCE of 62.6% and a wide dynamic range of 16.1dB at the UHF 900MHz band with a load resistance of 100-KΩ.

中文翻译：

---

用于无线供电的具有宽动态范围的 CMOS 自适应 433/900 MHz 差分射频功率采集器

提出了一种适用于无线功率传输 (WPT) 应用的宽动态范围、高效差分射频到直流电源转换器。该架构通过采用带有堆叠二极管的交叉耦合高阈值整流器件，在很宽的输入功率范围内提供高功率转换效率 (PCE)。所提出的整流器使用自适应偏置技术来控制整流器件的导通，并通过利用动态体偏置最小化反馈二极管的漏电流。与传统的交叉耦合整流器相比，所提出的整流器具有9.4×更好的动态范围。所提出的整流器原型采用 65-nm CMOS 技术实现，面积为 0.0148毫米²。整流器实现-18.1dBm 灵敏度为 1V 输出和 79.4% 的峰值 PCE。动态范围为 17.3分贝是在 433工业科学医疗频段（ISM 频段）中的 MHz，具有 100-KΩ加载。此外，所提出的设计提供 62.6% 的峰值 PCE 和 16.1 的宽动态范围UHF 900 处的 dB负载电阻为 100-K 的 MHz 频段Ω.