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

Circulator

power amplifiers

Doherty

GaN-HEMT

Författare

Paul Saad

Ericsson AB

Han Zhou

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik, Mikrovågselektronik

Jose-Ramon Perez-Cisneros

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Rui Hou

Ericsson AB

Christian Fager

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Bo Berglund

Ericsson AB

2021 51th European Microwave Conference, EuMC 2021

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

Ämneskategorier

Telekommunikation

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Senast uppdaterat

2021-11-09