Abstract: The study of Class E amplifier operation modes with shunting filter as well as those of derived Class E/F 3 and EF amplifiers with 0.33 duty ratio was performed. The goals of the ...

In this article, we propose a voltage-controlled oscillator (VCO) with a single three-coil transformer, featuring a common-mode (CM) resonance expansion and intrinsic differential 2nd harmonic output.