Efficiency and Linearity of Digital Class-C like Transmitters

Dieuwert P.N. Mul; Rob J. Bootsman; Quinten Bruinsma; Yiyu Shen; Sebastian Krause; Rudiger Quay; Marco J. Pelk; Morteza Alavi; Leo C.N. De Vreede; More Authors

doi:10.23919/EuMC48046.2021.9338122

Efficiency and Linearity of Digital Class-C like Transmitters

Dieuwert P.N. Mul
, Rob J. Bootsman
, Quinten Bruinsma
, Yiyu Shen
, Sebastian Krause
, Rudiger Quay
, Marco J. Pelk
, Morteza Alavi
, Leo C.N. De Vreede
, More Authors

Electronics

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

2 Citations (Scopus)

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.

Original language	English
Title of host publication	2020 50th European Microwave Conference, EuMC 2020
Publisher	IEEE
Pages	471-474
Number of pages	4
ISBN (Electronic)	9782874870590
DOIs	https://doi.org/10.23919/EuMC48046.2021.9338122
Publication status	Published - 2021
Event	50th European Microwave Conference, EuMC 2020 - Utrecht, Netherlands Duration: 12 Jan 2021 → 14 Jan 2021

Publication series

Name	2020 50th European Microwave Conference, EuMC 2020

Conference

Conference	50th European Microwave Conference, EuMC 2020
Country/Territory	Netherlands
City	Utrecht
Period	12/01/21 → 14/01/21

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy
SDG 12 Responsible Consumption and Production
SDG 13 Climate Action

Keywords

Class-C
CMOS RFIC
digital power amplifier
digital transmitter
efficiency
LDMOS
linearity
polar transmitter
RFDAC

Access to Document

10.23919/EuMC48046.2021.9338122

Cite this

Mul, D. P. N., Bootsman, R. J., Bruinsma, Q., Shen, Y., Krause, S., Quay, R., Pelk, M. J., Alavi, M., De Vreede, L. C. N., & More Authors (2021). Efficiency and Linearity of Digital Class-C like Transmitters. In 2020 50th European Microwave Conference, EuMC 2020 (pp. 471-474). Article 9338122 (2020 50th European Microwave Conference, EuMC 2020). IEEE. https://doi.org/10.23919/EuMC48046.2021.9338122

@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 = "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",

}

Mul, DPN , Bootsman, RJ, Bruinsma, Q, Shen, Y, Krause, S, Quay, R, Pelk, MJ , Alavi, M , De Vreede, LCN & More Authors 2021, Efficiency and Linearity of Digital Class-C like Transmitters. in 2020 50th European Microwave Conference, EuMC 2020., 9338122, 2020 50th European Microwave Conference, EuMC 2020, IEEE, pp. 471-474, 50th European Microwave Conference, EuMC 2020, Utrecht, Netherlands, 12/01/21. https://doi.org/10.23919/EuMC48046.2021.9338122

Efficiency and Linearity of Digital Class-C like Transmitters. / Mul, Dieuwert P.N.; Bootsman, Rob J.; Bruinsma, Quinten et al.
2020 50th European Microwave Conference, EuMC 2020. IEEE, 2021. p. 471-474 9338122 (2020 50th European Microwave Conference, EuMC 2020).

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

TY - GEN

T1 - Efficiency and Linearity of Digital Class-C like Transmitters

AU - Mul, Dieuwert P.N.

AU - Bootsman, Rob J.

AU - Bruinsma, Quinten

AU - Shen, Yiyu

AU - Krause, Sebastian

AU - Quay, Rudiger

AU - Pelk, Marco J.

AU - Alavi, Morteza

AU - De Vreede, Leo C.N.

AU - More Authors, null

PY - 2021

Y1 - 2021

N2 - 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.

AB - 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.

KW - Class-C

KW - CMOS RFIC

KW - digital power amplifier

KW - digital transmitter

KW - efficiency

KW - LDMOS

KW - linearity

KW - polar transmitter

KW - RFDAC

UR - https://www.scopus.com/pages/publications/85100930315

U2 - 10.23919/EuMC48046.2021.9338122

DO - 10.23919/EuMC48046.2021.9338122

M3 - Conference contribution

AN - SCOPUS:85100930315

T3 - 2020 50th European Microwave Conference, EuMC 2020

SP - 471

EP - 474

BT - 2020 50th European Microwave Conference, EuMC 2020

PB - IEEE

T2 - 50th European Microwave Conference, EuMC 2020

Y2 - 12 January 2021 through 14 January 2021

ER -

Efficiency and Linearity of Digital Class-C like Transmitters

Abstract

Publication series

Conference

UN SDGs

Keywords

Access to Document

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High-Power Digital Transmitters for Wireless Networks

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