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EnglishThe paper discusses the bandwidth extension of a second-harmonic tuned GaN Doherty power amplifier: the adopted strategy relies on output wideband compensation stages and input broadband matching. The single-band (3.5 GHz) and the wide-band (3–3.6 GHz) power amplifiers are compared in terms of building blocks design strategy. The performances, experimentally characterized in single- and two-tone conditions, are close to the state-of-the art for these applications, and confirm the validity of the bandwidth extension approach. In fact, output power of more than 43dBm and 6dB back-off efficiency of around 40% are maintained by the bandwidth extension strategy, as well as intermodulation ratio values. Furthermore, digital baseband predistortion is successfully applied to both stages.
Bandwidth extension of GaN Doherty power amplifier: Effect on power, efficiency and linearity / V. Camarchia;Jie Fang;G. Ghione;A. Javan Khoshkholgh;J. Moreno Rubio;M. Pirola;R. Quaglia;C. Ramella. - STAMPA. - Unico(2013), pp. 1-4. ((Intervento presentato al convegno 2013 IEEE International Wireless Symposium (IWS) tenutosi a Beijing nel Aprile 2013 [10.1109/IEEE-IWS.2013.6616789].
| Titolo: | Bandwidth extension of GaN Doherty power amplifier: Effect on power, efficiency and linearity | |
| Autori: | ||
| Data di pubblicazione: | 2013 | |
| Abstract: | The paper discusses the bandwidth extension of a second-harmonic tuned GaN Doherty power amplifie...r: the adopted strategy relies on output wideband compensation stages and input broadband matching. The single-band (3.5 GHz) and the wide-band (3–3.6 GHz) power amplifiers are compared in terms of building blocks design strategy. The performances, experimentally characterized in single- and two-tone conditions, are close to the state-of-the art for these applications, and confirm the validity of the bandwidth extension approach. In fact, output power of more than 43dBm and 6dB back-off efficiency of around 40% are maintained by the bandwidth extension strategy, as well as intermodulation ratio values. Furthermore, digital baseband predistortion is successfully applied to both stages. | |
| ISBN: | 9781467321419 | |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| 06616789.pdf | 2. Post-print / Author's Accepted Manuscript | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia |
http://hdl.handle.net/11583/2517288
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