Symmetrical Doherty Power Amplifier with High Efficiency and Extended Bandwidth
Paper i proceeding, 2023

This paper introduces a load modulation network for the Doherty power amplifier (PA). The proposed combiner network demonstrates inherent wideband characteristics and effectively addresses the impact of output parasitics resulting from the transistors, thereby achieving exceptional bandwidth performance. To validate the concept, a wideband prototype Doherty PA is designed and measured, employing GaN HEMT transistors. The experimental results exhibit a drain efficiency of 51-63 % at the peak output power and 41-53 % at 6-dB output power back-off across 1.6-2.7 GHz. Furthermore, the measured peak output power of 43.8±0.5 dBm within the same frequency range confirms the theoretical framework and demonstrates the promising potential of the proposed wideband Doherty PA for future applications in wireless transmitters.

Doherty Power Amplifier

Energy Efficiency

Wideband Operation

Combiner Synthesis

Författare

Han Zhou

Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik

Haojie Chang

Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik

Christian Fager

Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik

2023 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMIC)

2689-5498 (eISSN)


979-8-3503-2242-2 (ISBN)

2023 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMIC)
Aveiro, ,

Styrkeområden

Informations- och kommunikationsteknik

Infrastruktur

Kollberglaboratoriet

Drivkrafter

Hållbar utveckling

Innovation och entreprenörskap

Fundament

Grundläggande vetenskaper

Lärande och undervisning

Pedagogiskt arbete

Ämneskategorier

Annan elektroteknik och elektronik

DOI

10.1109/INMMIC57329.2023.10321799

Mer information

Senast uppdaterat

2024-05-01