Analysis of mm-Wave Multi-Stage Rectifier and Implementation

In the mm-wave frequency band, rectifier’s sensitivity is bottleneck of a wireless-powered IoT transponder’s distance. At meter’s distance, received power weak, and transistors in front end wireless receiver operate weak inversion region. This article presents mathematical analysis multi-stage rectifier low-power A design methodology 57–64-GHz fully integrated eight-stage with bulk-drain connection 40-nm CMOS technology presented. Parasitic effects on are analyzed. Based analysis, an intrinsic threshold voltage modulation applied to improve sensitivity. tree-type splitter also proposed for RF signal’s phase balance. With this method, signal arrives at each stage equal phase, its suppression output improved by 16 dB. achieves −7.1-dBm input 57 GHz 1-V dc voltage. The overall from 64 better than −4.5 dBm. Compared other silicon-based state arts, while maintaining compact size.