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.

VNA-based broadband EVM measurement of an RF nonlinear PA under load mismatch conditions / Gibiino G.P.; Angelotti A.M.; Santarelli A.; Traverso P.A.. - ELETTRONICO. - (2020), pp. 65-69. (Intervento presentato al convegno 24th IMEKO TC4 International Symposium and 22nd International Workshop on ADC and DAC Modelling and Testing, IWADC 2020 tenutosi a ita nel 2020).

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

Gibiino G. P.;Angelotti A. M.;Santarelli A.;Traverso P. A.
2020

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.
2020
24th IMEKO TC4 International Symposium and 22nd International Workshop on ADC and DAC Modelling and Testing
65
69
VNA-based broadband EVM measurement of an RF nonlinear PA under load mismatch conditions / Gibiino G.P.; Angelotti A.M.; Santarelli A.; Traverso P.A.. - ELETTRONICO. - (2020), pp. 65-69. (Intervento presentato al convegno 24th IMEKO TC4 International Symposium and 22nd International Workshop on ADC and DAC Modelling and Testing, IWADC 2020 tenutosi a ita nel 2020).
Gibiino G.P.; Angelotti A.M.; Santarelli A.; Traverso P.A.
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/805753
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 4
  • ???jsp.display-item.citation.isi??? ND
social impact