A third order analogue pre-distorter MMIC for E-band PA linearisation

In this paper we present the design, characterisation and non-linear control of an analogue pre-distortion (APD) MMIC at E-band. With non-linear behaviour models of the APD MMIC, we demonstrate the capability of controlling the quadrature gain and quadrature third order term. Finally, the APD is com...

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Bibliographic Details
Published in2022 17th European Microwave Integrated Circuits Conference (EuMIC) pp. 189 - 192
Main Authors Gavell, M., Granstram, G., Fager, C.
Format Conference Proceeding
LanguageEnglish
Published European Microwave Association (EuMA) 26.09.2022
Subjects
Analog Pre-distortion
Avalanche photodiodes
E-band
Microwave integrated circuits
Microwave theory and techniques
PHEMTs
Power amplifiers
Power measurement
Quadrature amplitude modulation
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Summary:In this paper we present the design, characterisation and non-linear control of an analogue pre-distortion (APD) MMIC at E-band. With non-linear behaviour models of the APD MMIC, we demonstrate the capability of controlling the quadrature gain and quadrature third order term. Finally, the APD is combined with a 1 W E-band PA, where we by cascading their measured responses show overall more linear behaviour towards saturated output power compared with the non-linearised 1 W PA. Simulated with 256 QAM modulated signals, the average output power of the linearised PA was 22.2 dBm in comparison to 18.7 dBm.
DOI:10.23919/EuMIC54520.2022.9923541