@inproceedings{a083525d8d2b40549c7acb5a9a96fb87,
title = "A 30-dBm class-d power amplifier with On/Off logic for an integrated tri-phasing transmitter in 28-nm CMOS",
abstract = "This paper presents an eight-unit class-D power amplifier (PA), implemented in 28-nm CMOS. The PA is designed to utilize tri-phasing modulation, which combines coarse-amplitude polar modulation with fine-resolution outphasing components. This new technique enables achieving the back-off efficiency of multilevel outphasing without linearity-degrading discontinuities in the output waveform. Each PA unit contains a cascoded output stage with a 3.6-V supply voltage, and on/off logic enabling multilevel operation controlled by low-voltage signals. The PA achieves a peak output power of 29.7 dBm with a 34.7\% efficiency, and is verified to operate with aggregated LTE signals at bandwidths up to 60 MHz at 1.7-GHz carrier frequency.",
keywords = "CMOS integrated circuits, outphasing, power amplifiers, radio transmitters, tri-phasing",
author = "Mikko Martelius and Kari Stadius and Jerry Lemberg and Enrico Roverato and Tero Nieminen and Yury Antonov and Lauri Anttila and Mikko Valkama and Marko Kosunen and Jussi Ryynanen",
note = "jufoid=54731; IEEE Radio Frequency Integrated Circuits Symposium ; Conference date: 10-06-2018 Through 12-06-2018",
year = "2018",
month = aug,
day = "7",
doi = "10.1109/RFIC.2018.8429024",
language = "English",
isbn = "9781538645451",
publisher = "IEEE",
pages = "136--139",
booktitle = "Proceedings of the 2018 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2018",
address = "United States",
}