University of Oulu

M. H. Montaseri, J. P. Aikio, T. Rahkonen and A. Pärssinen, "Analysis and Design of Capacitive Voltage Distribution Stacked MOS Millimeter-Wave Power Amplifiers," in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 69, no. 9, pp. 3540-3553, Sept. 2022,

Analysis and design of capacitive voltage distribution stacked MOS millimeter-wave power amplifiers

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Author: Montaseri, Mohammad Hassan1; Aikio, Janne P.2; Rahkonen, Timo2;
Organizations: 1Center for Wireless Communications, University of Oulu, 90570 Oulu, Finland
2lectronics Circuits and Systems Research Unit, University of Oulu, 90570 Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 2.6 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2022
Publish Date: 2022-10-03


Stacked MOS power amplifiers (PA) are commonly used in SOI nodes but also have the potential to be realized in bulk CMOS nodes. In this paper they are analyzed in millimeter wave regimes. The study focuses on the key limiting factors and in particular the optimum number of transistors from which the key performance parameters such as maximum possible operating frequency, output power, and efficiency are achieved. Based on the analysis, design trade-offs of stacked MOS PAs are presented. The frequency dependency of the optimum load presented to each stack is analyzed to express the overall performance of the mentioned PA topologies as a new optimization method. Additionally, it is shown how the optimal load variations translate into amplitude-to-amplitude/phase (AM-AM/PM) conversion distortions. The validity of the analysis is examined against simulations. The simulations are performed based on 8M1P CMOS 28nm technology and electromagnetic simulations in ADS Momentum.

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Series: IEEE transactions on circuits and systems. I, Regular papers
ISSN: 1549-8328
ISSN-E: 1558-0806
ISSN-L: 1549-8328
Volume: 69
Pages: 3540 - 3553
DOI: 10.1109/tcsi.2022.3185301
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work was supported in part by the InfoTech Oulu Doctoral Program, in part by the Finnish Funding Agency for Technology and Innovation (Tekes), in part by Nokia, in part by Esju, in part by CoreHW, in part by the Academy of Finland 6Genesis Flagship under Grant 318927, in part by the Nokia Foundation, and in part by Tauno Tönning Säätiö.
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
Copyright information: © The Author(s). 2022. This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see