15 GHz-band low phase-noise LC-VCO with second harmonic tunable filtering technique. - Qing Liu 032; Jiangtao Sun; Toshihiko Yoshimasu; Satoshi Kurachi; Nobuyuki Itoh (PIMRC, 2009)

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)

A Broadband High Suppression Frequency Doubler IC for Sub-Millimeter-Wave UWB Applications. - Jiangtao Sun; Qing Liu 032; Yong-Ju Suh; Takayuki Shibata; Toshihiko Yoshimasu (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2011)

A 66-dBc Fundamental Suppression Frequency Doubler IC for UWB Sensor Applications. - Jiangtao Sun; Qing Liu 032; Yong-Ju Suh; Takayuki Shibata; Toshihiko Yoshimasu (IEICE Trans. Electron., 2011)

A CMOS Class-G Supply Modulation for Polar Power Amplifiers with High Average Efficiency and Low Ripple Noise. - Qing Liu 032; Jiangtao Sun; Yong-Ju Suh; Nobuyuki Itoh; Toshihiko Yoshimasu (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2012)