Outphasing Class-E/ F2 Power Amplifier using a Quadrature Hybrid as Non-Isolating Combiner
| Autor: | Ana Cordero, Jose A. Garcia, David Vegas, M. Nieves Ruiz |
|---|---|
| Přispěvatelé: | Universidad de Cantabria |
| Rok vydání: | 2021 |
| Předmět: |
Outphasing
Physics business.industry Amplifier Electrical engineering Topology (electrical circuits) Class-E law.invention Capacitor Electric power transmission Transmission line law Chireix Load-pull Power amplifier Power efficiency Load modulation Hybrid coupler business Sensitivity (electronics) Power control |
| Zdroj: | IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR): Virtual Conference, San Diego, CA, 2021, 55-58 UCrea Repositorio Abierto de la Universidad de Cantabria Universidad de Cantabria (UC) |
| DOI: | 10.1109/pawr51852.2021.9375540 |
| Popis: | This paper presents a GaN HEMT outphasing power amplifier (PA), based on a class-E/ F 2 topology with reduced sensitivity to variable resistive load operation, designed to provide output power control over an extended range with high efficiency. A 90-degree hybrid coupler is used as non-isolating combiner, incorporating an appropriate reactive termination on its fourth port. Besides its many intrinsic advantages, the mutual load modulation trajectories may be rotated by simply adjusting a capacitor value or alternatively the length of an open-circuited transmission line. Once implemented at UHF band, the outphasing PA provides a drain efficiency higher than 70% up to an output power 10 dB below its peak value (42.2 dBm). This work was supported by the Spanish Ministry of Science, Innovation and Universities through TEC2017-83343-C4-1-R project, co-funded with FEDER. D. Vegas also thanks for the BES-2015-072203 grant. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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