Print Email Facebook Twitter High-Power Digital Transmitters for Wireless Infrastructure Applications (A Feasibility Study) Title High-Power Digital Transmitters for Wireless Infrastructure Applications (A Feasibility Study) Author Bootsman, R.J. (TU Delft Electronics) Mul, D.P.N. (TU Delft Electronics) Shen, Y. (TU Delft Electronics; IMEC) Hashemi, M. (TU Delft Electronics; ItoM) Heeres, Rob M. (Ampleon Netherlands B.V.) van Rijs, Fred (Ampleon Netherlands B.V.) Alavi, S.M. (TU Delft Electronics) de Vreede, L.C.N. (TU Delft Electronics) Date 2022 Abstract Fully digital transmitters (DTXs) have the potential of replacing analog-intensive transmitter (TX) line-ups in future massive multiple-input and multiple-output (mMIMO) systems since they hold the promise of higher system integration level and energy efficiency. DTX operation so far has been limited to low RF output powers. This article introduces a concept that enables high-power DTX operation. A DTX demonstrator targeting both high output power and high efficiency is realized as a proof of concept. It is based on a custom <formula> <tex>${V_{T}}$</tex> </formula> -shifted laterally-diffused MOS (LDMOS) technology, which is utilized to implement a segmented high-power output stage operated in class-BE. A low-voltage high-speed 40-nm CMOS controller drives the individual output stage segments at gigahertz rates. Measurements show the promising results for the proposed high-power DTX concept and provide valuable lessons for future DTX implementations. Subject Class-ECMOSCMOS technologydigital predistortion (DPD)digital transmitter (DTX)efficientGaNhigh-power RFlaterally-diffused MOS (LDMOS)Logic gatesmixing power digital-to-analog converter (DAC)polar.Power generationRadio frequencySwitchesThreshold voltageTransmitters To reference this document use: http://resolver.tudelft.nl/uuid:c188eab2-7141-448d-a8df-07195f5d992c DOI https://doi.org/10.1109/TMTT.2022.3153000 ISSN 0018-9480 Source IEEE Transactions on Microwave Theory and Techniques, 70 (5), 2835-2850 Part of collection Institutional Repository Document type journal article Rights © 2022 R.J. Bootsman, D.P.N. Mul, Y. Shen, M. Hashemi, Rob M. Heeres, Fred van Rijs, S.M. Alavi, L.C.N. de Vreede Files PDF High_Power_Digital_Transm ... _Study.pdf 5.95 MB Close viewer /islandora/object/uuid:c188eab2-7141-448d-a8df-07195f5d992c/datastream/OBJ/view