@inproceedings{67d91b62abea41cd8fc524ff26fd2428,
title = "A digital mm-Wave PA architecture with Simultaneous Frequency and back-off Reconfigurability",
abstract = "Spectrally-efficient operation with high power and high efficiency at deep back-off will be critical for the next-generation mm-Wave transmitters for 5G and beyond. In addition, as larger non-contiguous chunks of the mm-Wave spectrum open up, dynamic frequency reconfiguration while ensuring high spectral and energy efficiency can become key towards optimal utilization of spectral resources. In this paper, we present a generalized asymmetrical multi-port combiner based network synthesis approach that enables both frequency and back-off reconfigurability in a mm-Wave power amplifier (PA) architecture to maintain high-efficiency operation with spectrally efficient codes across a wide frequency range. As a proof of concept, a silicon-based PA is presented which operates between 30-55 GHz with peak Psat of 23.7 dBm at 40 GHz and output collector efficiency (ηout) of 34.5 % and 22% at the 0 and -6 dB back-off respectively. The PA maintains ηout > 16% at -6 dB back-off across the range. Non-constant modulation is demonstrated with pulse shaping and with data rates upto 4 Gbps across the frequencies from 30-50 GHz.",
keywords = "5G, Back-off, Doherty, PA, broad-band, combiner design, mm-Wave, reconfigurable PA, silicon",
author = "Chappidi, {Chandrakanth R.} and Xue Wu and Kaushik Sengupta",
note = "Publisher Copyright: {\textcopyright} 2017 IEEE.; 2017 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2017 ; Conference date: 04-06-2017 Through 06-06-2017",
year = "2017",
month = jul,
day = "5",
doi = "10.1109/RFIC.2017.7969084",
language = "English (US)",
series = "Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "328--331",
editor = "Andre Hanke and Srenik Mehta",
booktitle = "RFIC 2017 - Proceedings of the 2017 IEEE Radio Frequency Integrated Circuits Symposium",
address = "United States",
}