Novel VCO Architecture Using Series Above-IC FBAR and Parallel LC Resonance. - Kim B. Östman; Sami Sipilä; Ivan S. Uzunov; Nikolay T. Tchamov (IEEE J. Solid State Circuits, 2006)

High speed DC-DC dead time architecture. - Jani K. Jarvenhaara; Hans Herzog; Sami Sipilä; Jing Tian; Igor M. Filanovsky; Nikolay T. Tchamov (IEICE Electron. Express, 2015)