Distortion Contribution Analysis by combining the BLA and MIMO noise analysis

Adam Cooman, Gerd Vandersteen

Research output: Chapter in Book/Report/Conference proceedingMeeting abstract (Book)

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Abstract

To be able to cope with ever stronger specifications in terms of linearity, designers of analog electronic circuits need tools to effectively reduce the distortion generated in their circuits. A first step in solving a problem is finding its source, so our goal is to develop a simulation-based method which shows the dominant sources of non-linear distortion in an electronic circuit. To be useful during the design stage, the analysis should be fast and should avoid the use of special simulation techniques and/or device models.We combine the Best Linear Approximation (BLA) with existing noise de-embedding techniques from the microwave measurement community to obtain our goal. The BLA allows to consider the distortion added by every stage as noise.   Combining the BLA with a noise analysis allows to pinpoint the dominant source of non-linear distortion. At high frequencies, the input impedance and reverse gain of amplifier stages play an important role. Taking these effects into account requires a port representation of the stages and the interconnection network. This leads to the distortion contribution analysis based on the MIMO BLA. This new analysis can be used hierarchically from the system level, down to the transistor level.
Original languageEnglish
Title of host publicationPresentation of poster at 2013 BEMEKO workshop on Measurement: Challenges and Opportunities, University of Liège, Belgium, 7 November 2013
Publication statusPublished - 11 Jul 2013

Keywords

  • non-linear distortion
  • BLA
  • MIMO

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