A 74W/48V Monolithic-GaN Integrated Adjustable Multilevel Supply Modulator for 5G Base-Station Massive-MIMO Arrays

Hieu Minh Pham; Peter Asbeck; Donald F. Kimball; Navneet Sharma; Shenggang Dong; Masoud Shahshahani; Won Suk Choi; Gary Xu; Marcus Michel; Ratul Das; Robert Beach; Hanh Phuc Le

doi:10.1109/isscc49661.2025.10904518

A 74W/48V Monolithic-GaN Integrated Adjustable Multilevel Supply Modulator for 5G Base-Station Massive-MIMO Arrays

Hieu Minh Pham
, Peter Asbeck
, Donald F. Kimball
, Navneet Sharma
, Shenggang Dong
, Masoud Shahshahani
, Won Suk Choi
, Gary Xu
, Marcus Michel
, Ratul Das
, Robert Beach
, Hanh Phuc Le

Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

5 Scopus citations

Abstract

Efficient power management for RF power amplifiers (PAs) is emerging as a critical requirement for the development and adoption of next-generation wireless communication systems. To achieve higher transmitter efficiency, envelope tracking (ET) using supply modulators (SM) is widely used in today's systems. However, the demands for high bandwidth, complex modulation and multiple access schemes in 5G and upcoming 6G systems have exposed serious limitations of analog ET (AET) that get worse in high-power high-voltage applications, e.g., base-station transmitters. As a promising alternative to AET, digital envelope tracking (DET) has proven its advantages and capabilities to support various signal bandwidths and power profiles [1]-[8]. DET architectures in Figure 9.3.1 achieve higher efficiency by separating the voltage generation (VG) stage and tracker (TR) stage, in which the former aimed for relatively slow but efficient generations of multiple voltage levels and the latter for fast voltage tracking.

Original language	English (US)
Title of host publication	2025 IEEE International Solid-State Circuits Conference, ISSCC 2025
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9798331541019
DOIs	https://doi.org/10.1109/isscc49661.2025.10904518
State	Published - 2025
Event	72nd IEEE International Solid-State Circuits Conference, ISSCC 2025 - San Francisco, United States Duration: Feb 16 2025 → Feb 20 2025

Publication series

Name	Digest of Technical Papers - IEEE International Solid-State Circuits Conference
ISSN (Print)	0193-6530

Conference

Conference	72nd IEEE International Solid-State Circuits Conference, ISSCC 2025
Country/Territory	United States
City	San Francisco
Period	2/16/25 → 2/20/25

Bibliographical note

Publisher Copyright:
© 2025 IEEE.

Publisher link

10.1109/isscc49661.2025.10904518

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Pham, H. M., Asbeck, P., Kimball, D. F., Sharma, N., Dong, S., Shahshahani, M., Choi, W. S., Xu, G., Michel, M., Das, R., Beach, R., & Le, H. P. (2025). A 74W/48V Monolithic-GaN Integrated Adjustable Multilevel Supply Modulator for 5G Base-Station Massive-MIMO Arrays. In 2025 IEEE International Solid-State Circuits Conference, ISSCC 2025 (Digest of Technical Papers - IEEE International Solid-State Circuits Conference). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/isscc49661.2025.10904518

A 74W/48V Monolithic-GaN Integrated Adjustable Multilevel Supply Modulator for 5G Base-Station Massive-MIMO Arrays. / Pham, Hieu Minh; Asbeck, Peter; Kimball, Donald F. et al.
2025 IEEE International Solid-State Circuits Conference, ISSCC 2025. Institute of Electrical and Electronics Engineers Inc., 2025. (Digest of Technical Papers - IEEE International Solid-State Circuits Conference).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Pham, HM, Asbeck, P, Kimball, DF, Sharma, N, Dong, S, Shahshahani, M, Choi, WS, Xu, G, Michel, M, Das, R, Beach, R & Le, HP 2025, A 74W/48V Monolithic-GaN Integrated Adjustable Multilevel Supply Modulator for 5G Base-Station Massive-MIMO Arrays. in 2025 IEEE International Solid-State Circuits Conference, ISSCC 2025. Digest of Technical Papers - IEEE International Solid-State Circuits Conference, Institute of Electrical and Electronics Engineers Inc., 72nd IEEE International Solid-State Circuits Conference, ISSCC 2025, San Francisco, United States, 2/16/25. https://doi.org/10.1109/isscc49661.2025.10904518

Pham HM, Asbeck P, Kimball DF, Sharma N, Dong S, Shahshahani M et al. A 74W/48V Monolithic-GaN Integrated Adjustable Multilevel Supply Modulator for 5G Base-Station Massive-MIMO Arrays. In 2025 IEEE International Solid-State Circuits Conference, ISSCC 2025. Institute of Electrical and Electronics Engineers Inc. 2025. (Digest of Technical Papers - IEEE International Solid-State Circuits Conference). doi: 10.1109/isscc49661.2025.10904518

Pham, Hieu Minh ; Asbeck, Peter ; Kimball, Donald F. et al. / A 74W/48V Monolithic-GaN Integrated Adjustable Multilevel Supply Modulator for 5G Base-Station Massive-MIMO Arrays. 2025 IEEE International Solid-State Circuits Conference, ISSCC 2025. Institute of Electrical and Electronics Engineers Inc., 2025. (Digest of Technical Papers - IEEE International Solid-State Circuits Conference).

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abstract = "Efficient power management for RF power amplifiers (PAs) is emerging as a critical requirement for the development and adoption of next-generation wireless communication systems. To achieve higher transmitter efficiency, envelope tracking (ET) using supply modulators (SM) is widely used in today's systems. However, the demands for high bandwidth, complex modulation and multiple access schemes in 5G and upcoming 6G systems have exposed serious limitations of analog ET (AET) that get worse in high-power high-voltage applications, e.g., base-station transmitters. As a promising alternative to AET, digital envelope tracking (DET) has proven its advantages and capabilities to support various signal bandwidths and power profiles [1]-[8]. DET architectures in Figure 9.3.1 achieve higher efficiency by separating the voltage generation (VG) stage and tracker (TR) stage, in which the former aimed for relatively slow but efficient generations of multiple voltage levels and the latter for fast voltage tracking.",

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AU - Sharma, Navneet

AU - Dong, Shenggang

AU - Shahshahani, Masoud

AU - Choi, Won Suk

AU - Xu, Gary

AU - Michel, Marcus

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AB - Efficient power management for RF power amplifiers (PAs) is emerging as a critical requirement for the development and adoption of next-generation wireless communication systems. To achieve higher transmitter efficiency, envelope tracking (ET) using supply modulators (SM) is widely used in today's systems. However, the demands for high bandwidth, complex modulation and multiple access schemes in 5G and upcoming 6G systems have exposed serious limitations of analog ET (AET) that get worse in high-power high-voltage applications, e.g., base-station transmitters. As a promising alternative to AET, digital envelope tracking (DET) has proven its advantages and capabilities to support various signal bandwidths and power profiles [1]-[8]. DET architectures in Figure 9.3.1 achieve higher efficiency by separating the voltage generation (VG) stage and tracker (TR) stage, in which the former aimed for relatively slow but efficient generations of multiple voltage levels and the latter for fast voltage tracking.

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ER -

A 74W/48V Monolithic-GaN Integrated Adjustable Multilevel Supply Modulator for 5G Base-Station Massive-MIMO Arrays

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