A Wideband Two-Way Digital Doherty Transmitter in 40nm CMOS

A Wideband Two-Way Digital Doherty Transmitter in 40nm CMOS

Beikmirza, M.R. (TU Delft Electronics)
Shen, Y. (TU Delft Electronics)
de Vreede, L.C.N. (TU Delft Electronics)
Alavi, S.M. (TU Delft Electronics)

2022

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).

Cartesian, class-E
Doherty
efficient
wideband
digital power amplifier
RF-DAC
DPD
DTX
Balun
CMOS

http://resolver.tudelft.nl/uuid:60d41ba1-b1f8-4e18-a460-29632ca26ead

https://doi.org/10.1109/IMS37962.2022.9865506

IEEE, Danvers

2023-07-01

978-1-6654-9614-8

Proceedings of the 2022 IEEE/MTT-S International Microwave Symposium - IMS 2022

2022 IEEE/MTT-S
International Microwave Symposium, 2022-06-19 → 2022-06-24, Denver, United States

IEEE MTT-S International Microwave Symposium Digest, 0149-645X, 2022-June

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-care Otherwise 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.

Institutional Repository

conference paper

© 2022 M.R. Beikmirza, Y. Shen, L.C.N. de Vreede, S.M. Alavi