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EnglishThe design, implementation and characterization of a Doherty Power Amplifier (DPA) for 3.5 GHz WiMAX applications are discussed. The DPA has been implemented using a commercial GaN HEMT from Cree inc., following a class AB and C scheme for the main and peak module, respectively. The measured maximum power of the DPA is 22W with a first peak efficiency of 57%, and maximum drain efficiency of 65% at the DPA saturation. Efficiency over the so-called Doherty region (where both the main and the peak amplifiers operate) does not drop below 55% from saturation to 6 dB input back-off. The gain at the onset of the Doherty region is 8 dB, with around 1 dB roll-off.
A 22W 65% efficiency GaN Doherty power amplifier at 3.5 GHz for WiMAX applications / Moreno Rubio J.; Fang J.; Quaglia R.; Camarchia V.; Pirola M.; Donati Guerrieri S.; Ghione G.. - ELETTRONICO. - Unico(2011), pp. 101-104. ((Intervento presentato al convegno Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMIC), 2011 Workshop on tenutosi a Wien (AT) nel 18-19 April 2011.
| Titolo: | A 22W 65% efficiency GaN Doherty power amplifier at 3.5 GHz for WiMAX applications |
| Autori: | |
| Data di pubblicazione: | 2011 |
| Abstract: | The design, implementation and characterization of a Doherty Power Amplifier (DPA) for 3.5 GHz Wi...MAX applications are discussed. The DPA has been implemented using a commercial GaN HEMT from Cree inc., following a class AB and C scheme for the main and peak module, respectively. The measured maximum power of the DPA is 22W with a first peak efficiency of 57%, and maximum drain efficiency of 65% at the DPA saturation. Efficiency over the so-called Doherty region (where both the main and the peak amplifiers operate) does not drop below 55% from saturation to 6 dB input back-off. The gain at the onset of the Doherty region is 8 dB, with around 1 dB roll-off. |
| ISBN: | 978-1-4577-0650-9 |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| INMMIC2011.pdf | 2. Post-print / Author's Accepted Manuscript | PUBBLICO - Tutti i diritti riservati | Visibile a tuttiVisualizza/Apri |
http://hdl.handle.net/11583/2422118
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