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A High Efficiency 3.6-4.0 GHz Envelope-Tracking Power Amplifier Using GaN Soft-Switching Buck-Converter
| Content Provider | Semantic Scholar |
|---|---|
| Author | Komatsuzaki, Yuji Lanfranco, Sandro Kolmonen, Tapio Piirainen, Olli Tanskanen, Jarno K. Sakata, Shuichi Shinjo, Shintaro Yamanaka, Koji Asbeck, Peter M. |
| Copyright Year | 2018 |
| Abstract | We report a high efficiency sub-6GHz wideband Envelope-Tracking Power Amplifier (ET-PA) including a soft-switching buck-converter and a wideband RF-PA, used in conjunction with a digital front end (DFE) environment for signal generation and predistortion. Both buck-converter and RF-P A were fabricated using an 0.15um GaN HEMT process. The DFE can generate the input signals for both buck-converter and RF-P A, capture the output signal for feed-back and perform digital predistortion (DPD). The overall ET-P A achieves total efficiency of 39.5–46.7% and output power of 31.2–31.5dBm over 3.6–4.0GHz with 20MHz L TE signals. With DPD, ACLR was below −45dBc with total efficiency reaching 47% at 3.6GHz. This, to the best of the authors' knowledge, is the highest efficiency yet reported for an ET-PA at this carrier frequency. |
| Starting Page | 465 |
| Ending Page | 468 |
| Page Count | 4 |
| File Format | PDF HTM / HTML |
| DOI | 10.1109/mwsym.2018.8439225 |
| Alternate Webpage(s) | http://www.merl.com/publications/docs/TR2018-073.pdf |
| Alternate Webpage(s) | https://search.ieice.org/bin/pdf_link.php?abst=%5C%5C%5C%5C&category=C&fname=j103-c_2_86&lang=J&year=2020 |
| Journal | 2018 IEEE/MTT-S International Microwave Symposium - IMS |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
