EE142 Lecture26 1 Amin Arbabian Jan M. Rabaey Lecture 26: VCOs Introduction to PAs EE142 – Fall 2010 Dec. 2 nd , 2010 University of California, Berkeley 2 EE142-Fall 2010 Review One-Port, negative resistance view of oscillators discussed as another method to analyze/design oscillators. Differential oscillators. Today: – Voltage (/Current) Controlled Oscillators (VCOs) – Introduction to Power Amplifiers Challenges Efficiency/Output Power/Class-A Operation/…