Linking nonlinear distortion and a signal’s cumulative distribution function: a measurement-based approach

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Driven by societal, economical and technological pressures, wireless transmitters are becoming increasingly complex to achieve high power efficiency. High power efficiency is mainly obtained by pushing the RF power amplifier (PA) further into its nonlinear operating regime, which inevitably increases the nonlinear distortion generated by the amplifier. It is theoretically known that these distortions depend on both the power spectral density (PSD) and the probability density function (PDF) of the modulated excitation signal. In this paper, we experimentally validate the dependency of the nonlinear distortion with the cumulative distribution function (CDF) of the excitation signal’s envelope. First, we propose a novel design strategy that can impose the power spectral density and cumulative distribution function of an IQ-modulated signal. Next, measurements are performed on a nonlinear power amplifier, which experimentally validate the dependence of the amplifier’s linearized behavior on the envelope’s cumulative distribution function.
Original languageEnglish
Title of host publicationARFTG-100th Microwave Measurement Symposium
Number of pages4
Publication statusPublished - Jan 2023
EventARFTG-100th Microwave Measurement Symposium
: Measurement Challenges for Emerging RF-to-THz Technologies
- Las Vegas, United States
Duration: 22 Jan 202325 Jan 2023


ConferenceARFTG-100th Microwave Measurement Symposium
Abbreviated titleARFTG-2023
Country/TerritoryUnited States
CityLas Vegas
Internet address


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