Design and characterization of a 1.7–2.7 GHz quasi-MMIC Doherty power amplifier
| Autor: | Roberto Quaglia, M. J. Poulton, Mark D. Greene, Steve C. Cripps |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Engineering
business.industry Amplifier 020208 electrical & electronic engineering Bandwidth (signal processing) Electrical engineering Power bandwidth 020206 networking & telecommunications Gallium nitride 02 engineering and technology High-electron-mobility transistor chemistry.chemical_compound chemistry Hardware_INTEGRATEDCIRCUITS 0202 electrical engineering electronic engineering information engineering Electronic engineering Linear amplifier Mobile telephony business Monolithic microwave integrated circuit |
| Zdroj: | 2017 IEEE MTT-S International Microwave Symposium (IMS). |
| DOI: | 10.1109/mwsym.2017.8058689 |
| Popis: | This paper presents the design and characterization of a Doherty power amplifier for small cells applications in the 1.7–2.7 GHz band. A quasi-monolithic realization is chosen for its cost advantages when compared to a fully-monolithic solution, and relies on GaN HEMT active devices, but passive networks realized on GaAs substrate. A lumped element Doherty combiner is designed to maximize the bandwidth at which the power amplifier shows high back-off efficiency that results higher than 37% in the 1.7–2.7 GHz band. The dual-input topology permits high flexibility in the optimization of performance, in particular in terms of bandwidth. The fabricated Doherty favourably compares to previously published power amplifiers. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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