Search search
Publication Date
to
Vol. 172
Latest Volume
All Volumes
PIERC 173 PIERC 172 PIERC 171 PIERC 170 PIERC 169 PIERC 168 PIERC 167 PIERC 166 PIERC 165 PIERC 164 PIERC 163 PIERC 162 PIERC 161 PIERC 160 PIERC 159 PIERC 158 PIERC 157 PIERC 156 PIERC 155 PIERC 154 PIERC 153 PIERC 152 PIERC 151 PIERC 150 PIERC 149 PIERC 148 PIERC 147 PIERC 146 PIERC 145 PIERC 144 PIERC 143 PIERC 142 PIERC 141 PIERC 140 PIERC 139 PIERC 138 PIERC 137 PIERC 136 PIERC 135 PIERC 134 PIERC 133 PIERC 132 PIERC 131 PIERC 130 PIERC 129 PIERC 128 PIERC 127 PIERC 126 PIERC 125 PIERC 124 PIERC 123 PIERC 122 PIERC 121 PIERC 120 PIERC 119 PIERC 118 PIERC 117 PIERC 116 PIERC 115 PIERC 114 PIERC 113 PIERC 112 PIERC 111 PIERC 110 PIERC 109 PIERC 108 PIERC 107 PIERC 106 PIERC 105 PIERC 104 PIERC 103 PIERC 102 PIERC 101 PIERC 100 PIERC 99 PIERC 98 PIERC 97 PIERC 96 PIERC 95 PIERC 94 PIERC 93 PIERC 92 PIERC 91 PIERC 90 PIERC 89 PIERC 88 PIERC 87 PIERC 86 PIERC 85 PIERC 84 PIERC 83 PIERC 82 PIERC 81 PIERC 80 PIERC 79 PIERC 78 PIERC 77 PIERC 76 PIERC 75 PIERC 74 PIERC 73 PIERC 72 PIERC 71 PIERC 70 PIERC 69 PIERC 68 PIERC 67 PIERC 66 PIERC 65 PIERC 64 PIERC 63 PIERC 62 PIERC 61 PIERC 60 PIERC 59 PIERC 58 PIERC 57 PIERC 56 PIERC 55 PIERC 54 PIERC 53 PIERC 52 PIERC 51 PIERC 50 PIERC 49 PIERC 48 PIERC 47 PIERC 46 PIERC 45 PIERC 44 PIERC 43 PIERC 42 PIERC 41 PIERC 40 PIERC 39 PIERC 38 PIERC 37 PIERC 36 PIERC 35 PIERC 34 PIERC 33 PIERC 32 PIERC 31 PIERC 30 PIERC 29 PIERC 28 PIERC 27 PIERC 26 PIERC 25 PIERC 24 PIERC 23 PIERC 22 PIERC 21 PIERC 20 PIERC 19 PIERC 18 PIERC 17 PIERC 16 PIERC 15 PIERC 14 PIERC 13 PIERC 12 PIERC 11 PIERC 10 PIERC 9 PIERC 8 PIERC 7 PIERC 6 PIERC 5 PIERC 4 PIERC 3 PIERC 2 PIERC 1
All Journals
PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2026-08-22
A Miniaturized High-Efficiency Harmonic-Tuned Class-F Power Oscillator
By
Guangshuang Yu,

    Mr. Guangshuang Yu

    Liaoning Technical University

    China

    Homepage

Taijun Liu,

    Dr. Taijun Liu

    College of Information Science and Engineering

    Ningbo University

    China

    Homepage

Jingchang Nan

    Professor Jingchang Nan

    Liaoning Technical University

    China

    Homepage

Progress In Electromagnetics Research C, Vol. 172, 458-467, 2026
doi:10.2528/PIERC26060902 | Google Scholar

Abstract
To address the requirements for compact size and low cost of RF signal sources, a novel design method for high-efficiency Class-F power oscillators is proposed. The key contribution of this method is the integrated design of the harmonic-tuning and impedance-matching networks. An asymmetric π-type harmonic tuning network is proposed to simultaneously realize harmonic termination for high-efficiency Class-F operation and fundamental load impedance matching, thereby significantly reducing circuit footprint. The amplifier's output was coupled to a feedback network via a capacitor and returned to the amplifier through a frequency-selective network, enabling a stable self-excited oscillation. To verify the design, a power oscillator is implemented using a low-cost LDMOS transistor and an FR4 substrate. The experimental results show that the fabricated oscillator operates at 918\,MHz with a direct current-to-radio-frequency (DC-RF) efficiency of 68.20% and a maximum output power of 42.90 dBm. Additionally, a low phase noise of -130 dBc/Hz at 1 MHz offset is achieved, robustly validating the effectiveness of this approach.
Download Full Article (35) View Full Article volume
Citation
Guangshuang Yu, Taijun Liu, and Jingchang Nan, "A Miniaturized High-Efficiency Harmonic-Tuned Class-F Power Oscillator," Progress In Electromagnetics Research C, Vol. 172, 458-467, 2026.
doi:10.2528/PIERC26060902
References

1. Yotov, Ivo, Georgi Todorov, and Todor Todorov, "Study of self-excited thermomechanical oscillator with shape memory alloys," Actuators, Vol. 13, No. 5, 182, 2024.
doi:10.3390/act13050182        Google Scholar

2. Kudinov, Sergey and Viacheslav Ivanov, "Optimization of phase synchronization of radio pulses of a transistor microwave self-excited oscillator," 2024 IEEE Ural-Siberian Conference on Biomedical Engineering, Radioelectronics and Information Technology (USBEREIT), 284-287, Yekaterinburg, Russian Federation, May 2024.
doi:10.1109/usbereit61901.2024.10584014

3. Shin, Suk Woo, Gil Wong Choi, Hyoung Jong Kim, Su Hyun Lee, Sang Hoon Kim, and Jin Joo Choi, "Frequency-tunable high-efficiency power oscillator using GaN HEMT," 2010 IEEE MTT-S International Microwave Symposium, 1000-1003, Anaheim, CA, USA, May 2010.
doi:10.1109/mwsym.2010.5516887

4. Kim, Sang Hoon, Hyoung Jong Kim, Suk Woo Shin, Jae Duk Kim, Bo Ki Kim, and Jin Joo Choi, "Combined power oscillator using GaN HEMT," 2011 IEEE MTT-S International Microwave Symposium, 1-4, Baltimore, MD, USA, Jun. 2011.
doi:10.1109/mwsym.2011.5972775

5. Lee, Sanghun, Kisang Jung, Hak Seong Kim, Huan Nguyen, Thinh Nguyen, Luan Nguyen, Cuong Huynh, Kunhee Cho, and Jusung Kim, "Frequency-locked RF power oscillator with 43-dbm output power and 58% efficiency," IEEE Transactions on Very Large Scale Integration (VLSI) Systems, Vol. 29, No. 4, 739-746, Apr. 2021.
doi:10.1109/tvlsi.2021.3056720        Google Scholar

6. Ahmadi, Mohammad Mahdi and Shirin Pezeshkpour, "A self-starting class-E power oscillator with an inverting gate driver," IEEE Transactions on Industrial Electronics, Vol. 67, No. 10, 8344-8354, Oct. 2020.
doi:10.1109/tie.2019.2949533        Google Scholar

7. Rezk, Theodora M., Ghazal A. Fahmy, Sameh A. Ibrahim, and Hani F. Ragai, "A 433 MHz e-GaN HEMT based power oscillator for far field wireless power transfer," 2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC), 80-83, Alexandria, Egypt, Dec. 2020.
doi:10.1109/jac-ecc51597.2020.9355883

8. Rezk, Theodora M., Ghazal A. Fahmy, Sameh A. Ibrahim, and Hani F. Ragai, "Design of a differential power oscillator for 433 MHz WPT using e-GaN HEMTs," Ain Shams Engineering Journal, Vol. 13, No. 3, 101581, May 2022.
doi:10.1016/j.asej.2021.09.008        Google Scholar

9. Pezeshkpour, Shirin and Mohammad Mahdi Ahmadi, "A self-tuned class-E/F3 power oscillator," IEEE Transactions on Power Electronics, Vol. 39, No. 9, 11398-11408, Sep. 2024.
doi:10.1109/tpel.2024.3390243        Google Scholar

10. Shin, Suk-Woo and Jin-Joo Choi, "Frequency-tunable 150W harmonic-tuned power oscillator," Microwave and Optical Technology Letters, Vol. 53, No. 6, 1459-1462, Jun. 2011.
doi:10.1002/mop.25970        Google Scholar

11. Hwang, Woong Jae, Suk Woo Shin, Gil Wong Choi, Hyoung Jong Kim, and Jin Joo Choi, "High-efficiency power oscillator using harmonic-tuned matching network," 2009 IEEE MTT-S International Microwave Symposium Digest, 1505-1508, Boston, MA, USA, Jun. 2009.
doi:10.1109/mwsym.2009.5165994

12. Lee, Seunghyun, Sanggeun Jeon, and Jinho Jeong, "Harmonic-tuned high efficiency RF oscillator using GaN HEMTs," IEEE Microwave and Wireless Components Letters, Vol. 22, No. 6, 318-320, Jun. 2012.
doi:10.1109/lmwc.2012.2197816        Google Scholar

13. Jeong, Jinho and Daeung Jang, "Design technique for harmonic-tuned RF power oscillators for high-efficiency operation," IEEE Transactions on Industrial Electronics, Vol. 62, No. 1, 221-228, Jan. 2015.
doi:10.1109/tie.2014.2331021        Google Scholar

14. Guo, Qingyu, Yifeng Lu, Chaowu Mao, and Jianyang Zhou, "Design of 2.45-GHz high-efficiency miniaturized power oscillator using GaN HEMT," Journal of Physics: Conference Series, Vol. 2527, No. 1, 012064, 2023.
doi:10.1088/1742-6596/2527/1/012064

15. Kim, Juwan, Inho Park, and Hyunchul Ku, "Design of a highly efficient N-stage harmonic terminated voltage multiplier for wireless power transfer," Energies, Vol. 14, No. 21, 7203, Nov. 2021.
doi:10.3390/en14217203        Google Scholar

16. Iqbal, Hasan and Arif Sarwat, "Design and implementation of hybrid GA-PSO-based harmonic mitigation technique for modified packed U-cell inverters," Energies, Vol. 18, No. 1, 124, Dec. 2025.
doi:10.3390/en18010124        Google Scholar

17. Wu, Qixiu, Wei Deng, Yaqian Sun, Haikun Jia, Hongzhuo Liu, Shiwei Zhang, Zhihua Wang, and Baoyong Chi, "An enhanced class-F dual-core VCO with common-mode-noise self-cancellation and isolation technique," IEEE Journal of Solid-State Circuits, Vol. 59, No. 8, 2441-2454, Aug. 2024.
doi:10.1109/jssc.2024.3367351        Google Scholar

18. Hou, Yaru, Runlong Li, Pei-Ling Chi, and Tao Yang, "A dual-core dual-mode class-F VCO with wide frequency tuning range using wide inductance-switching-range inductor," IEEE Microwave and Wireless Technology Letters, Vol. 35, No. 4, 460-463, Apr. 2025.
doi:10.1109/lmwt.2025.3536158        Google Scholar

19. Kim, Jisu and Juntaek Oh, "Ku-band class-F VCO based on independent third-harmonic-controlled resonator," IEEE Microwave and Wireless Technology Letters, 1-4, 2026.
doi:10.1109/lmwt.2026.3707908        Google Scholar

20. Jang, Sheng-Lyang, Zhen-Wei Yeh, and Wen-Cheng Lai, "N-core class-F LC voltage-controlled-oscillators using area-efficient series-LC resonator," 2026 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS), 1-5, Waco, TX, USA, Apr. 2026.
doi:10.1109/wmcs70298.2026.11591450

21. Sun, Menghan, Di Lu, Baoqi Zhu, Weiming Ma, Kwan L. Yeung, and Ming Yu, "High-efficiency, low-phase-noise power oscillator based on feedback network synthesis technique," IEEE Transactions on Microwave Theory and Techniques, 1-12, 2026.
doi:10.1109/tmtt.2026.3713831        Google Scholar

Download Full Article (35) View Full Article volume


The EM Academy piers.org jpier.org Who's Who in EM
Copyright © 2022 The Electromagnetics Academy. All Rights Reserved.