A Single-Supply Balun-First Three-Way mm-Wave Doherty PA

A Single-Supply Balun-First Three-Way mm-Wave Doherty PA

Kumaran, A.K. (TU Delft Electronics)
Pashaeifar, M. (TU Delft Electronics)
Alexanderson, Mats (Huawei Technologies Sweden AB)
de Vreede, L.C.N. (TU Delft Electronics)
Alavi, S.M. (TU Delft Electronics)

2024

This article introduces a single-supply balun-first three-way parallel Doherty power amplifier (PA) tailored for millimeter-wave (mm-wave) fifth-generation (5G) applications. It incorporates a bandwidth enhancement technique that widens the operational frequency range, enhances broadband power back-off (PBO) efficiency, and reduces impedance mismatch between differential PAs. Realized in 40-nm CMOS bulk technology with a core area of 0.77 mm2 , the prototype delivers a saturated power/peak gain surpassing 20 dBm/16 dB, and it demonstrates a drain efficiency (DE) exceeding 15%/22%/33% at 9.5 dB/6 dB/0 dB PBO across a 24–30 GHz band. The proposed mm-wave PA achieves EVM/ACLR values of − 24.3 dB/ − 30.1 dBc for a 1-GHz 64-QAM OFDM signal, operating at an average output power (Pout) of 9.4 dBm with an average DE of 15%. For a 50-MHz 1024-QAM OFDM signal, it achieves an average Pout/DE of 8.6 dBm/12% with EVM/ACLR of − 30 dB/ − 36.3 dBc.

Compact
Doherty
lumped components
millimeter wave
Norton transformation
power amplifier (PA)
three-stage

http://resolver.tudelft.nl/uuid:f22d9f11-6522-447d-9988-537f746ba781

https://doi.org/10.1109/TMTT.2024.3365697

2024-11-07

1557-9670

IEEE Transactions on Microwave Theory and Techniques, 72 (5), 2757-2772

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

journal article

© 2024 A.K. Kumaran, M. Pashaeifar, Mats Alexanderson, L.C.N. de Vreede, S.M. Alavi