Tuning Space Mapping Based Design of High-Performance Doherty Power Amplifier MMIC

Zhuocheng Tian; Xu Yan; Jingyuan Zhang; Yongxin Guo

doi:10.1109/IWEM65640.2025.11167927

Tuning Space Mapping Based Design of High-Performance Doherty Power Amplifier MMIC

Zhuocheng Tian
, Xu Yan
, Jingyuan Zhang^*
, Yongxin Guo^*

^*Corresponding author for this work

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

Abstract

In this paper, a fast optimization method for millimeter-wave Doherty power amplifier (DPA) monolithic microwave integrated circuit (MMIC) is proposed based on the tuning space mapping (TSM). To validate the proposed approach, a Ka-band DPA MMIC is implemented with a highly compact die size of 2.0 × 1.0 mm². The optimized circuit obtains a 27-28.4 GHz bandwidth. Within the operating band, the DPA exhibits a saturation output power of 31-32 dBm, a saturated PAE of 40%~43%, and a PAE at 6-dB output power back-off (OBO) of 30%~32% according to simulation results. It is demonstrated that this method can reduce the number of necessary electromagnetic (EM) simulations from 203 to 10, resulting in over 20 times design speed acceleration. © 2025 IEEE.

Original language	English
Title of host publication	2025 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)
Publisher	IEEE
Pages	298-300
ISBN (Electronic)	9798331522407
ISBN (Print)	979-8-3315-2241-4
DOIs	https://doi.org/10.1109/IWEM65640.2025.11167927
Publication status	Published - 2025
Event	2025 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM 2025) - City University of Hong Kong, Hong Kong, China Duration: 4 Aug 2025 → 6 Aug 2025 https://www.ee.cityu.edu.hk/skltmw/iwem2025/

Publication series

Name	IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition, iWEM

Workshop

Workshop	2025 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM 2025)
Abbreviated title	iWEM2025
Place	Hong Kong, China
Period	4/08/25 → 6/08/25
Internet address	https://www.ee.cityu.edu.hk/skltmw/iwem2025/

Funding

This work was supported in part by the State Key Laboratory of Radio Frequency Heterogeneous Integration (Open Scientific Research Program No. KF2024013); in part by the Science and Technology Project of Jiangsu Province under Grant BZ2022056; and in part by the Startup Grant for Professor (SGP)-CityU SGP, City University of Hong Kong under Grant 9380170.

Research Keywords

Doherty power amplifier (DPA)
electromagnetic optimization
Ka-band
Space mapping

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10.1109/IWEM65640.2025.11167927

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Tian, Z., Yan, X., Zhang, J., & Guo, Y. (2025). Tuning Space Mapping Based Design of High-Performance Doherty Power Amplifier MMIC. In 2025 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) (pp. 298-300). (IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition, iWEM). IEEE. https://doi.org/10.1109/IWEM65640.2025.11167927

Tian, Zhuocheng ; Yan, Xu ; Zhang, Jingyuan et al. / Tuning Space Mapping Based Design of High-Performance Doherty Power Amplifier MMIC. 2025 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM). IEEE, 2025. pp. 298-300 (IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition, iWEM).

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title = "Tuning Space Mapping Based Design of High-Performance Doherty Power Amplifier MMIC",

abstract = "In this paper, a fast optimization method for millimeter-wave Doherty power amplifier (DPA) monolithic microwave integrated circuit (MMIC) is proposed based on the tuning space mapping (TSM). To validate the proposed approach, a Ka-band DPA MMIC is implemented with a highly compact die size of 2.0 × 1.0 mm2. The optimized circuit obtains a 27-28.4 GHz bandwidth. Within the operating band, the DPA exhibits a saturation output power of 31-32 dBm, a saturated PAE of 40\%\textasciitilde{}43\%, and a PAE at 6-dB output power back-off (OBO) of 30\%\textasciitilde{}32\% according to simulation results. It is demonstrated that this method can reduce the number of necessary electromagnetic (EM) simulations from 203 to 10, resulting in over 20 times design speed acceleration. {\textcopyright} 2025 IEEE.",

keywords = "Doherty power amplifier (DPA), electromagnetic optimization, Ka-band, Space mapping",

author = "Zhuocheng Tian and Xu Yan and Jingyuan Zhang and Yongxin Guo",

year = "2025",

doi = "10.1109/IWEM65640.2025.11167927",

language = "English",

isbn = "979-8-3315-2241-4",

series = "IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition, iWEM",

publisher = "IEEE",

pages = "298--300",

booktitle = "2025 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)",

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note = "2025 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM 2025), iWEM2025 ; Conference date: 04-08-2025 Through 06-08-2025",

url = "https://www.ee.cityu.edu.hk/skltmw/iwem2025/",

}

Tian, Z, Yan, X, Zhang, J & Guo, Y 2025, Tuning Space Mapping Based Design of High-Performance Doherty Power Amplifier MMIC. in 2025 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM). IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition, iWEM, IEEE, pp. 298-300, 2025 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM 2025), Hong Kong, China, 4/08/25. https://doi.org/10.1109/IWEM65640.2025.11167927

Tuning Space Mapping Based Design of High-Performance Doherty Power Amplifier MMIC. / Tian, Zhuocheng; Yan, Xu; Zhang, Jingyuan et al.
2025 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM). IEEE, 2025. p. 298-300 (IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition, iWEM).

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

TY - GEN

T1 - Tuning Space Mapping Based Design of High-Performance Doherty Power Amplifier MMIC

AU - Tian, Zhuocheng

AU - Yan, Xu

AU - Zhang, Jingyuan

AU - Guo, Yongxin

PY - 2025

Y1 - 2025

N2 - In this paper, a fast optimization method for millimeter-wave Doherty power amplifier (DPA) monolithic microwave integrated circuit (MMIC) is proposed based on the tuning space mapping (TSM). To validate the proposed approach, a Ka-band DPA MMIC is implemented with a highly compact die size of 2.0 × 1.0 mm2. The optimized circuit obtains a 27-28.4 GHz bandwidth. Within the operating band, the DPA exhibits a saturation output power of 31-32 dBm, a saturated PAE of 40%~43%, and a PAE at 6-dB output power back-off (OBO) of 30%~32% according to simulation results. It is demonstrated that this method can reduce the number of necessary electromagnetic (EM) simulations from 203 to 10, resulting in over 20 times design speed acceleration. © 2025 IEEE.

AB - In this paper, a fast optimization method for millimeter-wave Doherty power amplifier (DPA) monolithic microwave integrated circuit (MMIC) is proposed based on the tuning space mapping (TSM). To validate the proposed approach, a Ka-band DPA MMIC is implemented with a highly compact die size of 2.0 × 1.0 mm2. The optimized circuit obtains a 27-28.4 GHz bandwidth. Within the operating band, the DPA exhibits a saturation output power of 31-32 dBm, a saturated PAE of 40%~43%, and a PAE at 6-dB output power back-off (OBO) of 30%~32% according to simulation results. It is demonstrated that this method can reduce the number of necessary electromagnetic (EM) simulations from 203 to 10, resulting in over 20 times design speed acceleration. © 2025 IEEE.

KW - Doherty power amplifier (DPA)

KW - electromagnetic optimization

KW - Ka-band

KW - Space mapping

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U2 - 10.1109/IWEM65640.2025.11167927

DO - 10.1109/IWEM65640.2025.11167927

M3 - RGC 32 - Refereed conference paper (with host publication)

SN - 979-8-3315-2241-4

T3 - IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition, iWEM

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EP - 300

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PB - IEEE

T2 - 2025 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM 2025)

Y2 - 4 August 2025 through 6 August 2025

ER -

Tian Z, Yan X, Zhang J, Guo Y. Tuning Space Mapping Based Design of High-Performance Doherty Power Amplifier MMIC. In 2025 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM). IEEE. 2025. p. 298-300. (IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition, iWEM). Epub 2025 Sept 25. doi: 10.1109/IWEM65640.2025.11167927

Tuning Space Mapping Based Design of High-Performance Doherty Power Amplifier MMIC

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