Doherty Load Modulation Based on Non-Reciprocity
Paper i proceeding, 2021

This paper presents a new type of Doherty power amplifiers (DPA) based on non-reciprocal power combiners. We replace the conventional quarter-wave (λ/4) impedance inverter in a DPA by a non-reciprocal gyrator. As proof of concept, a DPA using a commercial circulator has been implemented. The
prototype PA exhibits a peak output power of 49.1 ± 0.1dBm and efficiency between 57-68% at 6 dB output back-off (OBO) across 2.08 -2.14 GHz. Linearized modulated measurements, using 10MHz LTE signal with 7.8 dB PAPR, show an average output power of 13 W, an average drain efficiency of 54 %, and an adjacent channel leakage ratio (ACLR) lower than -55 dBc.

energy efficiency

power amplifiers

Doherty

Circulator

GaN-HEMT

Författare

Paul Saad

Ericsson AB

Han Zhou

Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik

Jose-Ramon Perez-Cisneros

Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik

Rui Hou

Ericsson AB

Christian Fager

Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik

Bo Berglund

Ericsson AB

2021 51st European Microwave Conference, EuMC 2021

938-941
978-2-87487-063-7 (ISBN)

2021 51th European Microwave Conference, EuMC 2021
London, United Kingdom,

Ämneskategorier

Telekommunikation

DOI

10.23919/EuMC50147.2022.9784157

Mer information

Senast uppdaterat

2024-05-01