VNA-based broadband EVM measurement of an RF nonlinear PA under load mismatch conditions

• Abstract:

  In the context of modern communications systems operating at radio-frequency (RF), the error vector magnitude (EVM) is the most commonly adopted metric to quantify modulation distortion caused by a nonlinear device. While EVM is typically measured with instrumentation featuring broad acquisition bandwidth (BW), here we implement a method based on multiple narrowband vector network analyzer (VNA) acquisitions, allowing for improved measurement accuracy and for broader characterization BWs. We report the EVM characterization of a nonlinear RF power amplifier (PA), analyzing, in particular, the case of the PA cascaded with a linear network, under load mismatch conditions as imposed by a narrowband passive tuner.
• Download:

  IMEKO-TC4-2020-13.pdf
• DOI:

  _unreg_tc4-2020.13

Event details:

• IMEKO TC:

  TC4
• Event name:

  TC4 Symposium 2020 (ONLINE)
• Title:

  24^th IMEKO TC4 Symposium and 22^nd International Workshop on ADC and DAC Modelling and Testing (IWADC)

• Place:

  Palermo, ITALY
• Time:

  14 September 2020 - 16 September 2020