Vol. 35
Latest Volume
All Volumes
PIERC 148 [2024] PIERC 147 [2024] PIERC 146 [2024] PIERC 145 [2024] PIERC 144 [2024] PIERC 143 [2024] PIERC 142 [2024] PIERC 141 [2024] PIERC 140 [2024] PIERC 139 [2024] PIERC 138 [2023] PIERC 137 [2023] PIERC 136 [2023] PIERC 135 [2023] PIERC 134 [2023] PIERC 133 [2023] PIERC 132 [2023] PIERC 131 [2023] PIERC 130 [2023] PIERC 129 [2023] PIERC 128 [2023] PIERC 127 [2022] PIERC 126 [2022] PIERC 125 [2022] PIERC 124 [2022] PIERC 123 [2022] PIERC 122 [2022] PIERC 121 [2022] PIERC 120 [2022] PIERC 119 [2022] PIERC 118 [2022] PIERC 117 [2021] PIERC 116 [2021] PIERC 115 [2021] PIERC 114 [2021] PIERC 113 [2021] PIERC 112 [2021] PIERC 111 [2021] PIERC 110 [2021] PIERC 109 [2021] PIERC 108 [2021] PIERC 107 [2021] PIERC 106 [2020] PIERC 105 [2020] PIERC 104 [2020] PIERC 103 [2020] PIERC 102 [2020] PIERC 101 [2020] PIERC 100 [2020] PIERC 99 [2020] PIERC 98 [2020] PIERC 97 [2019] PIERC 96 [2019] PIERC 95 [2019] PIERC 94 [2019] PIERC 93 [2019] PIERC 92 [2019] PIERC 91 [2019] PIERC 90 [2019] PIERC 89 [2019] PIERC 88 [2018] PIERC 87 [2018] PIERC 86 [2018] PIERC 85 [2018] PIERC 84 [2018] PIERC 83 [2018] PIERC 82 [2018] PIERC 81 [2018] PIERC 80 [2018] PIERC 79 [2017] PIERC 78 [2017] PIERC 77 [2017] PIERC 76 [2017] PIERC 75 [2017] PIERC 74 [2017] PIERC 73 [2017] PIERC 72 [2017] PIERC 71 [2017] PIERC 70 [2016] PIERC 69 [2016] PIERC 68 [2016] PIERC 67 [2016] PIERC 66 [2016] PIERC 65 [2016] PIERC 64 [2016] PIERC 63 [2016] PIERC 62 [2016] PIERC 61 [2016] PIERC 60 [2015] PIERC 59 [2015] PIERC 58 [2015] PIERC 57 [2015] PIERC 56 [2015] PIERC 55 [2014] PIERC 54 [2014] PIERC 53 [2014] PIERC 52 [2014] PIERC 51 [2014] PIERC 50 [2014] PIERC 49 [2014] PIERC 48 [2014] PIERC 47 [2014] PIERC 46 [2014] PIERC 45 [2013] PIERC 44 [2013] PIERC 43 [2013] PIERC 42 [2013] PIERC 41 [2013] PIERC 40 [2013] PIERC 39 [2013] PIERC 38 [2013] PIERC 37 [2013] PIERC 36 [2013] PIERC 35 [2013] PIERC 34 [2013] PIERC 33 [2012] PIERC 32 [2012] PIERC 31 [2012] PIERC 30 [2012] PIERC 29 [2012] PIERC 28 [2012] PIERC 27 [2012] PIERC 26 [2012] PIERC 25 [2012] PIERC 24 [2011] PIERC 23 [2011] PIERC 22 [2011] PIERC 21 [2011] PIERC 20 [2011] PIERC 19 [2011] PIERC 18 [2011] PIERC 17 [2010] PIERC 16 [2010] PIERC 15 [2010] PIERC 14 [2010] PIERC 13 [2010] PIERC 12 [2010] PIERC 11 [2009] PIERC 10 [2009] PIERC 9 [2009] PIERC 8 [2009] PIERC 7 [2009] PIERC 6 [2009] PIERC 5 [2008] PIERC 4 [2008] PIERC 3 [2008] PIERC 2 [2008] PIERC 1 [2008]
2012-11-25
A Class E Power Amplifier with Coupling Coils for a Wireless Power Transfer System
By
Progress In Electromagnetics Research C, Vol. 35, 13-22, 2013
Abstract
A class E power amplifier including coupling coils is proposed for application in a wireless power transfer system using magnetic coupling. The proposed amplifier is directly connected to the coils with no discrete components for harmonic filtering and dc feeding, which could cause efficiency degradation of the amplifier. The system with the differential amplifier shows 6.95 W of transmitted power and 44.6% transmission efficiency at 6.8 MHz with 14-cm distant coils. The power-added efficiency of the amplifier is 92.1% with a 14 V supply voltage, excluding the coupling efficiency of the wireless power transfer network.
Citation
Jong-Ryul Yang, Hyeon-Chang Son, and Young-Jin Park, "A Class E Power Amplifier with Coupling Coils for a Wireless Power Transfer System," Progress In Electromagnetics Research C, Vol. 35, 13-22, 2013.
doi:10.2528/PIERC12100914
References

1. Peng, L., O. Breinbjerg, and N. A. Mortensen, "Wireless energy transfer through non-resonant magnetic coupling," Journal of Electromagnetic Waves and Applications, Vol. 24, No. 11-12, 1587-1598, 2010.
doi:10.1163/156939310792149795

2. Choi, J. and C. Seo, "High-efficiency wireless energy transmission using magnetic resonance based on negative refractive index metamaterial," Progress In Electromagnetics Research, Vol. 106, 33-47, 2010.
doi:10.2528/PIER10050609

3. Wei, X. C. and E. P. Li, "Simulation and experimental comparison of different coupling mechanisms for the wireless electricity transfer," Journal of Electromagnetic Waves and Applications, Vol. 23, No. 7, 925-934, 2009.
doi:10.1163/156939309788355180

4. Cannon, B. L., J. F. Hoburg, D. D. Stancil, and S. C. Goldstein, "Magnetic resonant coupling as a potential means for wireless power transfer to multiple small receivers," IEEE Trans. Power Elect., Vol. 24, No. 7, 1819-1825, Jul. 2009.
doi:10.1109/TPEL.2009.2017195

5. Jang, , B.-J., S. Lee, and H. Yoon, "HF-band wireless power transfer system: Concept, issues, and design," Progress In Electromagnetics Research, Vol. 124, 211-231, 2012.
doi:10.2528/PIER11120511

6. Laskovski, A. N. and M. R. Yuce, "Class-E oscillators as wireless power transmitters for biomedical implants," Proc. 3rd Int. Symp. Appl. Sci. Biomedical and Communication Tech., 1-5, Rome, Nov. 2010 .

7. Ma, Q., M. R. Haider, S. Yuan, and S. K. Islam, "Power-oscillator based high e±ciency inductive power-link for transcutaneous power transmission," Proc. 55rd IEEE Int. Midwest Symp. Circuits and Systems, 537-540, Seattle, 2010.

8. Juntunen, E., D. Dawn, S. Pinel, and J. Laskar, "A high-efficiency, high-power millimeter-wave oscillator using a feedback class-e power amplifier in 45nm CMOS," IEEE Microw. Wireless Compon. Lett., Vol. 21, No. 8, 430-432, Aug. 2011.
doi:10.1109/LMWC.2011.2157334

9. Jimenez-Martin, J. L., V. Gonzalez-Posadas, J. E. Gonzalez-Garcia, F. J. Arques-Orobon, L. E. Garcia-Munoz, and D. Segovia-Vargas, "Dual band high efficiency class ce power amplifier based on CRLH diplexer," Progress In Electromagnetics Research, Vol. 97, 217-240, 2009.
doi:10.2528/PIER09071609

10. Grebennikov, , A. V., "Switched-mode rf and microwave parallelcircuit class E power amplifiers," Int. J. RF and Microw. Computer-Aided Eng., Vol. 14, No. 1, 21-35, Jan. 2004.
doi:10.1002/mmce.10112

11. Son, H.-C., J. W. Kim, D.-H. Kim, K.-H. Kim, and Y.-J. Park, "Self-resonant coil with coaxial-like capacitor for wireless power transfer," Proc. Asia-Pacific Microw. Conf., 90-93, Melbourne, 2011.