A Wide Tuning Range CMOS Quadrature Ring Oscillator with Improved FoM for Inductorless Reconfigurable PLL.
Ramesh K. PokharelShashank LingalaAwinash AnandPrapto NugrohoAbhishek TomarHaruichi KanayaKeiji YoshidaPublished in: IEICE Trans. Electron. (2011)