A 5.2GHz Trifilar Transformer-Based Class-F23 Noise Circulating VCO with FoM of 192.6 dBc/Hz. - Hanzhang Cao; Tongde Huang; Xiaolong Liu; Hao Wang; Jin Jin; Wen Wu (A-SSCC, 2023)

A 24.6-to-30.6GHz Magnetic-Isolated Sub-Sampling PLL with a Fast-Locking FLL Achieving 64.9fs Jitter, -253.3dB FoMJ, and -69.1dBc Reference Spur in 65nm CMOS. - Hanzhang Cao; Chuqiao Wang; Yanwei Liu; Wen Wu; Tongde Huang; Xiaolong Liu (CICC, 2025)

34.5 An 18.5-to-23.6GHz Quad-Core Class-F23 Oscillator Without 2nd/3rd Harmonic Tuning Achieving 193dBc/Hz Peak FoM and 140-to-250kHz 1/f3PN Corner in 65nm CMOS. - Hanzhang Cao; Sichen Gao; Jin Jin; Xiaolong Liu; Wen Wu; Tongde Huang (ISSCC, 2025)

A Trifilar Transformer-Based Class-F23 VCO With Noise-Circulating Technology. - Hanzhang Cao; Sichen Gao; Tongde Huang; Xiaolong Liu; Hao Wang; Jin Jin; Wen Wu 005 (IEEE Trans. Very Large Scale Integr. Syst., 2025)