@inproceedings{27e840ea350b4869a76819945e956488,
title = "Load modulated balanced mm-Wave CMOS PA with integrated linearity enhancement for 5G applications",
abstract = "The paper presents an mm-Wave load modulated balanced amplifier (LMBA) architecture across 30-40 GHz. The architecture is implemented with a transformer-based hybrid at input and output to allow wideband power combining and achieve high isolation with a control PA for load-modulation and back-off efficiency enhancement across 30-40 GHz. To overcome the compressive behaviour of an LMBA and enhance linearity, an integrated adaptive biasing is integrated on-chip allowing superior ACLR performance across 30-40 GHz. Under CW excitation, the two-stage LMBA demonstrates output power of 18.5-20 dBm, output drain efficiency >30% across 30-40 GHz. The modulation capabilities of LMBA are tested using a 64 QAM signal with a data rate of 6 Gbps wherein PA demonstrates EVM of -26.4 dB and ACLR of -29 dBc at an average output power of 10.6 dBm. To the best of the authors' knowledge, this is the first load-modulated balanced PA at mmWave in silicon.",
keywords = "5G, Hybrid, Load modulation, Nun-Wave, Power amplifier, Transformer",
author = "Chappidi, {Chandrakanth R.} and Tushar Sharma and Zheng Liu and Kaushik Sengupta",
note = "Publisher Copyright: {\textcopyright} 2020 IEEE.; 2020 IEEE/MTT-S International Microwave Symposium, IMS 2020 ; Conference date: 04-08-2020 Through 06-08-2020",
year = "2020",
month = aug,
doi = "10.1109/IMS30576.2020.9224038",
language = "English (US)",
series = "IEEE MTT-S International Microwave Symposium Digest",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "1101--1104",
booktitle = "IMS 2020 - 2020 IEEE/MTT-S International Microwave Symposium",
address = "United States",
}