A 55-75 GHz Rectifier with 27% RF-to-DC Conversion Efficiency at 0 dBm in 22-nm FDSOI CMOS Technology

This paper presents a high-efficiency millimeter wave (mmW) rectifier for wireless power transfer (WPT) systems, targeting enhanced performance at lower input power levels. Leveraging a differential cross-coupled topology in 22 nm FDSOI CMOS technology, the proposed rectifier achieves a peak power conversion efficiency (PCE) of 27% at 60 GHz with 0 dBm input power and maintains a PCE above 25% across a broad input power range from -2.5 to 5 dBm. It also demonstrates wideband operation, maintaining a peak PCE above 20% from 56 GHz to 69 GHz. This performance provides greater flexibility for transmitter design and enables longer WPT distances.