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A new analytical approach in modeling of multi-loop feed-forward linearized microwave power amplifiers

Afshin Hemmatyar, A. M ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. DOI: 10.1016/j.aeue.2007.06.003
  3. Publisher: Elsevier GmbH , 2008
  4. Abstract:
  5. Feed-forward is one of the main methods for linearization of microwave power amplifiers. Although the complexity of the system is increased, the level of inter-modulation rejection (IMR) of a feed-forward system can be improved using a multi-loop configuration. Predicting the IMR of such a system is of prime importance. A new analytical approach in modeling a multi-loop feed-forward system for predicting the linearization performance of the system is presented. The first loop of the multi-loop system is substituted by an equivalent amplifier model and then the reduced system as a new feed-forward system is evaluated. The predicted IMR values are verified using the ADS simulator and a MATLAB program. © 2007 Elsevier GmbH. All rights reserved
  6. Keywords:
  7. Linearization ; Mathematical models ; MATLAB ; Systems analysis ; Amplifier models ; Inter-modulation rejection (IMR) ; Microwave power amplifiers ; Power amplifiers
  8. Source: AEU - International Journal of Electronics and Communications ; Volume 62, Issue 6 , 2008 , Pages 421-429 ; 14348411 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S1434841107001276