Publications (Click to Download Full PDF):

• Leifso C. and  Nisbet J. “A Monolithic 6 GHz Quadrature Frequency Doubler With Adjustable Phase Offset”  IEEE Journal of Solid-State Circuits, Volume 41,  Issue 2,  Feb. 2006 Page(s):405 – 412.
• Leifso, C. and Haslett, J.W. “A Fully Integrated Active Inductor With Independent Voltage Tunable Inductance and Series Loss Resistance” Microwave Theory and Techniques, IEEE Transactions on , Volume: 49 Issue: 4 Part: 1 , April 2001 Pages: 671-676.
• Leifso, C.; Haslett, J.W.; McRory, J.G.“Monolithic Tunable Active Inductor with Independent Q Control” Microwave Theory and Techniques, IEEE Transactions on , Volume: 48 Issue: 6 , June 2000 Pages: 1024 -1029.
• Leifso C. and  Haslett J.W. “An Analytic Model for Estimating the Length of the Velocity Saturated Region in GaAs MESFET’s”, Electron Devices, IEEE Transactions on, Volume: 47 Issue: 5 , May 2000 Pages: 905 –909.
•  Leifso C.  “Quadrature Frequency Doubler With Adjustable Phase Offset”, Provisional US patent application Serial No.11/677,400
• Leifso, C. and Haslett, J.W.“Active Tunable Inductor”,US patent No. US6211753 Granted 04/03/2001.
• Leifso, C. and Tiller S. “System and Method of Amplifier Gain Control by Variable Bias and Degeneration”, US patent No. 6870425, Granted April 16, 2003.
• Leifso, C. and Tiller S.  “Frequency Divider System and Method”, US patent No. 6847239, Granted April 16, 2003.
• Tiller S. and Roy S.   “Amplifier with Switched DC Bias Voltage Feedback ”, US patent No. 5896062, Granted April 20, 1999.
• Leifso, C.  “Monolithic CMOS Tunable Active Resonators”, presented at the 1999 11th International Conference On Wireless Communications, Calgary Alberta, July 1999.
• Leifso, C.  “Tunable Integrated Active Inductors”, presented at the Nortel Advanced Technology Wireless Forum VII, Ottawa, October 18-20, 1998.
• Leifso, C.  “CMOS Integrated Tunable Active Resonant Circuits”, presented at the Canadian Microelectronics Corporation Forum on RF IC Research and Development, November 1998.
• Leifso, C.  “Monolithic Tunable Active Resonant Circuits”, paper presentation at the Telecommunications Research Laboratories Technology Forum, Calgary, Alberta, October 1999.