Camarchia, V., Fang, Jie, Ghione, G., Khoshkholgh, A. Javan, Moreno Rubio, J. ![]() ![]() |
Abstract
The 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.
Item Type: | Conference or Workshop Item (Paper) |
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Date Type: | Published Online |
Status: | Published |
Schools: | Engineering |
Publisher: | IEEE |
ISBN: | 9781467321419 |
Last Modified: | 04 Nov 2022 12:15 |
URI: | https://orca.cardiff.ac.uk/id/eprint/122384 |
Citation Data
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