Energy-Efficient Amplifiers Based on Quasi-Floating Gate Techniques. - Lopez-Martin, Antonio; Garde, Maria Pilar; Algueta-Miguel, Jose M.; Beloso-Legarra, Javier; Carvajal, Ramon G.; Ramirez-Angulo, Jaime; Grasso, Alfio Dario (Applied Sciences (2076-3417), 2021)