A 1.2-3.2 GHz CMOS VCO IC Utilizing Transformer-Based Variable Inductors and AMOS Varactors. - Qing Liu 032; Yusuke Takigawa; Satoshi Kurachi; Nobuyuki Itoh; Toshihiko Yoshimasu (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2011)