DML Talk by Vittorio Camarchia: "High-Frequency Doherty Power Amplifiers: Challenges and Design Methodologies"
Free in-person event, no registration required.
Abstract
Doherty power amplifiers are widely used to achieve high efficiency with high-PAPR signals, but their extension to millimetre-wave frequencies is far from trivial. At high frequency, classical Doherty assumptions no longer hold, and efficiency, gain, bandwidth, linearity, and implementation constraints become strongly interdependent.
This lecture provides a design-oriented perspective on the key challenges limiting high-frequency Doherty operation and discusses practical methodologies to address them. Topics include gain behaviour, on-chip power combination, bandwidth limitations, and linearity degradation, with emphasis on architectural trade-offs rather than idealized solutions. The discussion is supported by measured GaN MMIC examples for 5G and satellite applications, showing that successful high-frequency Doherty designs rely on balanced co-design choices rather than isolated performance optimization.
Speaker bio
Vittorio Camarchia is an Associate Professor at the Department of Electronics and Telecommunications, Politecnico di Torino, Italy. His research focuses on high-efficiency and high-linearity RF/microwave power amplifiers for 5G/6G and satellite communications, with emphasis on load-modulated architectures, including Doherty, Chireix and LMBA amplifiers, GaN/GaAs MMIC design, and broadband linearization. He is Chair of IEEE MTT-S TC-23 Wireless Communications for 2025–2026 and an IEEE MTT-S Distinguished Microwave Lecturer for 2026–2028.
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- Eindhoven University of Technology
- De Groene Loper 19
- Eindhoven, Noord-Brabant
- Netherlands 5612AP
- Building: Flux (building 19)
- Room Number: 0.150
- Click here for Map