Energy Efficient Power Amplifier for Next Generation Mobile Handsets, Alumno/a: Maryam Sajedin F echa de defensa: 21/07/2023 Codirectores: Jonathan Rodríguez González, Manuel A. Reis de Oliveira, M. Fdez Barciela

Resumo

This work aims to develop an energy efficient and broadband power amplifier (PA) for 5G mobile handset to enable very high speed connectivity through small cell technology. The active load modulation Doherty power amplifier (DPA) is one of the dominating architectures among efficiency enhancement techniques in both base station and handset PAs, due to its tunable efficiency characteristics and moderate linearity. As a first contribution, the advanced asymmetrical two-way Doherty topologies focusing on harmonic tuning approaches (ClassF/F^(-1)) have been researched theoretically. As a proof of concept, a systematic design approach of a wideband GaN HEMT Class-J DPA based on the second harmonic tuning has been proposed. Then, for realizing an energy-efficient, low cost, small size, and low power 5G user equipment, the integrated circuit implementation of DPA (MMIC DPA) has been investigated and aimed to design and develop at mm-wave frequency (26GHz) band frequencies based on a 0.15-μm enhancement mode (E-mode) GaAs pHEMT process that can support the 5G multiple carrier’s transmission at RE-Front End.