Amplitude Varying Phased Array Linearization
Paper i proceeding, 2021

A new optimization technique for amplitude-varying phased array digital predistortion (DPD) is presented. The new technique improves the linearization compared to the conventional phased array DPD techniques as the amplitude variation increases across the array. The measurement results indicate that linearization can change the adjacent channel power (ACP) pattern leading to increased ACP in the sidelobes. This sheds light on the trade-off between the main beam and side-lobes levels in the ACP pattern under different DPD techniques. We evaluate total radiated ACP or integrated ACP (IACP) and peak of ACP (PACP). We show that slight amplitude variation improves the IACP and PACP. However, as the amplitude variation increases, IACP of phased array with DPD is worsened compared to phased array without DPD.

digital predistortion

power amplifiers

phased array

ACP

Författare

Sara Hesami

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Sina Rezaei Aghdam

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Kommunikationssystem

John Dooley

Maynooth University

Thomas Eriksson

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Kommunikationssystem

Christian Fager

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

2020 50th European Microwave Conference, EuMC 2020

348-351 9338037

50th European Microwave Conference, EuMC 2020
Utrecht, Netherlands,

Ämneskategorier

Acceleratorfysik och instrumentering

Signalbehandling

Annan elektroteknik och elektronik

DOI

10.23919/EuMC48046.2021.9338037

Mer information

Senast uppdaterat

2021-08-03