Journal
APPLIED SCIENCES-BASEL
Volume 11, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/app11073271
Keywords
amplifiers; analog integrated circuits; CMOS integrated circuits; energy-efficient amplifiers; class AB circuits
Categories
Funding
- AEI/FEDER [PID2019-107258RB-C32]
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Energy efficiency is crucial in the design of modern wireless amplifiers, and utilizing quasi-floating gate transistors is an effective approach to achieve this. Different QFG circuit design techniques have been illustrated to implement low-voltage, energy-efficient class AB amplifiers. A new super class AB QFG amplifier has been presented as a design example, with measurement results confirming its excellent small-signal and large-signal performance.
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.
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