@inproceedings{eab967ec5e5242f9ac64063cdd63ea40,
title = "Efficiency and Linearity of Digital Class-C like Transmitters",
abstract = "An energy-efficient, intrinsically linear, digital class-C like operation-mode is investigated for use in high-power digital transmitters (DTXs), which target next generation mMIMO base stations that offer lower costs, higher integration, and improved system efficiency. The proposed operation utilizes class-B/C output matching in combination with duty-cycle reduction and current-mode operation of a segmented output stage. Its performance in terms of efficiency, output power, and linearity is benchmarked with analog class-B/C operation. The proposed digital class-C like operation has been experimentally verified using a fully-digital, dual TX line-up with VT-shifted segmented LDMOS output stages. All output stage segments are individually controlled by high-speed digital drivers implemented in 40 nm CMOS technology. The realized prototype provides 25.9 W (CW) output power with 75.7 % drain and 72.9 % system efficiencies, at 930 MHz and at 28 V drain supply.",
keywords = "Class-C, CMOS RFIC, digital power amplifier, digital transmitter, efficiency, LDMOS, linearity, polar transmitter, RFDAC",
author = "Mul, {Dieuwert P.N.} and Bootsman, {Rob J.} and Quinten Bruinsma and Yiyu Shen and Sebastian Krause and Rudiger Quay and Pelk, {Marco J.} and Morteza Alavi and {De Vreede}, {Leo C.N.} and {More Authors}",
year = "2021",
doi = "10.23919/EuMC48046.2021.9338122",
language = "English",
series = "2020 50th European Microwave Conference, EuMC 2020",
publisher = "Institute of Electrical and Electronics Engineers (IEEE)",
pages = "471--474",
booktitle = "2020 50th European Microwave Conference, EuMC 2020",
address = "United States",
note = "50th European Microwave Conference, EuMC 2020 ; Conference date: 12-01-2021 Through 14-01-2021",
}
