Better Alternative for Measuring Linearity of GaN Amplifiers

  • Author: Walt Strickler, Paulo Correa, George Bollendorf
Utilization of GaN technology will accelerate in coming years, driven primarily by advances in commercial and military radar as well as the build out of 5G networks. 5G has very demanding linearity requirements. Traditional tools for assessing amplifier linearity used in the networks are no longer sufficient to predict real-world performance. When compared to traditional tools, analyzing crest factor reduction caused by amplifier compression combined with the statistical analysis offered by CCDFs offers a clearer and more true indication of signal compression, a lower cost alternative, simpler, less error prone measurements, and higher accuracy. In addition, this tool shows how amplifiers previously considered not suitable for communications applications actually can be good alternatives to traditionally used amplifiers.