60 W Class-E/F<sub>3</sub> Switching Power Amplifier With an Improved Second Harmonic Distortion of &#x2212;49 dBc

Sooncheol Bae; Hansik Oh; Woojin Choi; Jaekyung Shin; Yifei Chen; Hyeongjin Jeon; Young Chan Choi; Sunwoo Nam; Soohyun Bin; Yoonjung Lee; Kang-Yoon Lee; Keum Cheol Hwang; Youngoo Yang

doi:10.1109/ACCESS.2024.3378574

IEEE Access (Jan 2024)

60 W Class-E/F<sub>3</sub> Switching Power Amplifier With an Improved Second Harmonic Distortion of −49 dBc

Sooncheol Bae,
Hansik Oh,
Woojin Choi,
Jaekyung Shin,
Yifei Chen,
Hyeongjin Jeon,
Young Chan Choi,
Sunwoo Nam,
Soohyun Bin,
Yoonjung Lee,
Kang-Yoon Lee,
Keum Cheol Hwang,
Youngoo Yang

Affiliations

Sooncheol Bae: ORCiD; Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, South Korea
Hansik Oh: Samsung Electronics Company Ltd., Suwon, South Korea
Woojin Choi: ORCiD; Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, South Korea
Jaekyung Shin: ORCiD; Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, South Korea
Yifei Chen: ORCiD; Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, South Korea
Hyeongjin Jeon: Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, South Korea
Young Chan Choi: ORCiD; Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, South Korea
Sunwoo Nam: Department of Semiconductor Display Engineering, Sungkyunkwan University, Suwon, South Korea
Soohyun Bin: Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, South Korea
Yoonjung Lee: ORCiD; Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, South Korea
Kang-Yoon Lee: ORCiD; Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, South Korea
Keum Cheol Hwang: ORCiD; Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, South Korea
Youngoo Yang: ORCiD; Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, South Korea

DOI: https://doi.org/10.1109/ACCESS.2024.3378574
Journal volume & issue: Vol. 12
pp. 41980 – 41987

Abstract

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This paper presents a Class-E/F3 switching power amplifier (SPA) with reduced second harmonic leakage using parallel resonant circuit in series for the second harmonics. The proposed Class-E/F3 SPA has a structure utilizing a series resonant circuit in shunt for the third harmonic, designed to function as a shunt capacitor for the fundamental, and an additional parallel resonant circuit for the second harmonic, designed to operate as a series inductor for the fundamental. Using the proposed scheme, a Class-E/F3 SPA was designed and implemented for 6.78 MHz, and was evaluated with various supply voltages. It exhibited output power levels ranging from 10.26 to 59.98 W (40.11 to 47.78 dBm) with supply voltages ranging from 10 to 24 V. The efficiency was maintained at over 89.25%. Additionally, it demonstrated very low second and third harmonic distortion levels, each not exceeding −49.98 dBc, while the total harmonic distortion (THD) ranged from 1.54% to 2.15%.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

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