Open AccessResearch on Power Amplifier Based on Envelope Tracking Technology
Author(s) -
Chao Guo,
Fei Yang
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1802/2/022091
Subject(s) - linear amplifier , amplifier , rf power amplifier , power bandwidth , direct coupled amplifier , power added efficiency , electrical engineering , power supply rejection ratio , operational transconductance amplifier , electronic engineering , operational amplifier , engineering , computer science , cmos
With the development of mobile communication technology, the envelope bandwidth and power peak-to-average ratio of radio frequency signals are gradually increased. However, the power consumption requirements of electronic equipment are difficult to meet by traditional constant voltage power amplifiers. The mode of dynamic voltage supply is adopted by the envelope tracking power amplifier, which can make a good balance between the linearity and efficiency of the power amplifier system. The fundamental of envelope tracking power amplifier is shown in the article. Transistor model is selected to design the power amplifier, ADS and other tool software are used for simulation. The feasibility of envelope tracking technology is verified in improving the efficiency of power amplifier.