A Wide Tuning Range CMOS Quadrature Ring Oscillator with Improved FoM for Inductorless Reconfigurable PLL. - Ramesh K. Pokharel; Shashank Lingala; Awinash Anand; Prapto Nugroho; Abhishek Tomar; Haruichi Kanaya; Keiji Yoshida (IEICE Trans. Electron., 2011)

Low Phase Noise 14-Bit Digitally Controlled CMOS Quadrature Ring Oscillator. - Ramesh K. Pokharel; Prapto Nugroho; Awinash Anand; Abhishek Tomar; Haruichi Kanaya; Keiji Yoshida (IEICE Trans. Electron., 2013)