Abstract This work presents a 28nm deeply power-scalable reconfigurable series-resonance/ClassF VCO with mutual-inductance self-cancellation and hybrid 8-shaped coupling techniques, achieving power scalability from 5.7 to 93.1mW. By switching between parallel-resonance (Class-F) and series-resonance modes, the VCO achieves −149dBc/Hz PN and 192.8dBc/Hz FoM at a 10MHz offset. This design enables flexible PN–power scalability for Wi-Fi 7, IoT, and wearable devices. Voltage-controlled oscillators (VCOs) in next-generation wireless systems are frequently required to exhibit more flexible power-performance scalability to address more complex standards and increasingly diverse application scenarios. Modern communication protocols are not just about high data rates, but rather represent a process where demands evolve continuously over time [1,2]. For instance, Wi-Fi 7 (802.11be) introduces 4096-QAM
Juntao Lan, Wei Deng, Haikun Jia, Shiwei Zhang, Zhihua Wang, Baoyong Chi
Tsinghua University, Beijing, China