A Multiband VCO Using a Switched Series Resonance for Fine Frequency Tuning Sensitivity and Phase Noise Improvement Research Authors Islam Mansour , Marwa Mansour , Mohamed Aboualalaa, Ahmed Allam, Adel B. Abdel-Rahman, Ramesh K. Pokharel , Member, IEEE, and Mohammed Abo-Zahhad, Research Date Tue, 19 Jan 2021 - 12:00 Research Department Electrical Engineering Department Research Journal IEEE Research Member Mohammed Abo Zahhad Research Year 2021