Experimental Monitoring of Aging in CMOS RF Linear Power Amplifiers: Correlation between Device and Circuit Degradation

Rosana Rodriguez, Albert Crespo-Yepes, Javier Martin-Martinez, Montserrat Nafria, Xavier Aragones, Diego Mateo, Enrique Barajas

Research output: Other contribution

2 Citations (Scopus)


The high-frequency operation of RF circuits poses additional challenges to the prediction of their reliability during the initial design phase. Among them, the availability of device compact models that describe their aging under RF conditions and the model experimental validation at circuit level. In this work, RF test circuits that allow establishing device-circuit aging correlations are described. Two different 2.45 GHz power amplifier circuits with similar performance, implemented in a 65 nm CMOS technology, have been designed and experimentally characterized. Results demonstrate the importance of the topology selection to guarantee robustness against aging effects, and thus the need to predict their parameter degradation during the initial design phase, accounting for the actual DC and RF device operation conditions. With that purpose, we propose a semi-empirical MOSFET compact model that, based on the RMS equivalent voltages at the transistor terminals when operated within a RF circuit, can provide an accurate estimation of the device and circuit degradations.

Original languageEnglish
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728131993
Publication statusPublished - Apr 2020

Publication series

NameIEEE International Reliability Physics Symposium Proceedings
ISSN (Print)1541-7026


  • aging
  • CMOS
  • power amplifier
  • reliability
  • RF


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