Energy-Efficient Amplifiers Based on Quasi-Floating Gate Techniques

Energy efficiency is a key requirement in the design of amplifiers for modern wireless applications. The use of quasi-floating gate (QFG) transistors is a very convenient approach to achieve such energy efficiency. We illustrate different QFG circuit design techniques aimed to implement low-voltage,...

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Bibliographic Details
Published in:Applied sciences 2021-04, Vol.11 (7), p.3271
Main Authors: Lopez-Martin, Antonio, Garde, Maria Pilar, Algueta-Miguel, Jose M., Beloso-Legarra, Javier, Carvajal, Ramon G., Ramirez-Angulo, Jaime
Format: Article
Language:English
Subjects:
Amplifier design
amplifiers
analog integrated circuits
Circuit design
Circuits
class AB circuits
CMOS
CMOS integrated circuits
Design techniques
Electric potential
Energy efficiency
energy-efficient amplifiers
Medical equipment
Power amplifiers
Transistors
Voltage
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Summary:Energy efficiency is a key requirement in the design of amplifiers for modern wireless applications. The use of quasi-floating gate (QFG) transistors is a very convenient approach to achieve such energy efficiency. We illustrate different QFG circuit design techniques aimed to implement low-voltage, energy-efficient class AB amplifiers. A new super class AB QFG amplifier is presented as a design example, including some of the techniques described. The amplifier has been fabricated in a 130 nm CMOS test chip prototype. Measurement results confirm that low-voltage, ultra-low-power amplifiers can be designed, preserving, at the same time, excellent small-signal and large-signal performance.
ISSN:2076-3417
2076-3417
DOI:10.3390/app11073271