A 1-V, 6.72-mW, 5.8-GHz CMOS Injection-Locked Quadrature Local Oscillator with Stacked Transformer Feedback VCO. - Tzuen-Hsi Huang; Yuan-Ru Tseng; Shang-Hsun Wu (IEICE Trans. Electron., 2010)

A 7-GHz, Low-Power, Low Phase-Noise Differential Current-Reused VCO Utilizing a Trifilar-Transformer-Feedback Technique. - Yan-Ru Tseng; Tzuen-Hsi Huang; Shang-Hsun Wu (IEICE Trans. Electron., 2011)