Abstract
A 40nm CMOS wideband digital Cartesian push-pull inverted Doherty operating in class-E is presented. Wideband Doherty operation is achieved over a 1.9-to-3GHz frequency band, using an off-chip power combining network. The fully digital transmitter (DTX) provides 25.3dBm peak power with a drain/DTX line-up efficiency (DE/SE) of 58.7%/44.9%, respectively, at 2.4GHz. When operated with a 160MHz 256-QAM OFDM signal, it achieves 46.1%/32.7% average DE/SE, with an ACLR and EVM better than −40.6dBc and −33.9dB, respectively, using a simple memory-less digital pre-distortion (DPD).
Original language | English |
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Title of host publication | Proceedings of the 2022 IEEE/MTT-S International Microwave Symposium - IMS 2022 |
Place of Publication | Danvers |
Publisher | IEEE |
Pages | 975-978 |
Number of pages | 4 |
ISBN (Electronic) | 978-1-6654-9613-1 |
ISBN (Print) | 978-1-6654-9614-8 |
DOIs | |
Publication status | Published - 2022 |
Event | 2022 IEEE/MTT-S International Microwave Symposium - Denver, United States Duration: 19 Jun 2022 → 24 Jun 2022 |
Publication series
Name | IEEE MTT-S International Microwave Symposium Digest |
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Volume | 2022-June |
ISSN (Print) | 0149-645X |
Conference
Conference | 2022 IEEE/MTT-S International Microwave Symposium |
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Country/Territory | United States |
City | Denver |
Period | 19/06/22 → 24/06/22 |
Bibliographical note
Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-careOtherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Keywords
- Cartesian, class-E
- Doherty
- efficient
- wideband
- digital power amplifier
- RF-DAC
- DPD
- DTX
- Balun
- CMOS