Hostname: page-component-586b7cd67f-r5fsc Total loading time: 0 Render date: 2024-11-22T13:39:20.405Z Has data issue: false hasContentIssue false
  • English
  • Français

Impedance matching approach of L-section circuit with ohmic loss in reactive components

Part of: Wirelessly Powering: The Future

Published online by Cambridge University Press:  13 February 2018

Satoshi Suzuki ,
Qiaowei Yuan  and
Qiang Chen
Satoshi Suzuki*
Affiliation:
Tohoku University, Sendai, Japan. Phone: +81 22 277 4410
Qiaowei Yuan
Affiliation:
National Institute of Technology, Sendai College. 4-16-1, Ayashi Chuo, Aoba-ku, Sendai, 989-3128, Japan
Qiang Chen
Affiliation:
Tohoku University, Sendai, Japan. Phone: +81 22 277 4410
*
Corresponding author: S. Suzuki Email: [email protected]
Get access

Abstract

Impedance matching is very important to improve transmission efficiency not only for wireless communication but also for wireless power transfer. Lumped reactive elements are usually used in the impedance matching circuit. These reactive components such as inductors and capacitors have ohmic loss. An exact approach to design the lumped matching circuit at the presence of the ohmic loss is derived in this paper. Moreover, the condition for selection of impedance matching topology is deduced not only for lossless case but also for lossy case. Finally, the effect of the ohmic loss in the impedance matching circuit on the transmission efficiency is demonstrated quantitatively.

Keywords

Wireless Power TransferImpedance matchingOhmic lossQ factorTransmission efficiency
Type
Wirelessly Powering: The Future
Information
Wireless Power Transfer , Volume 5 , Issue 1 , March 2018 , pp. 64 - 74
Copyright
Copyright © Cambridge University Press 2018 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

[1] Simon, O.; Mahlein, J.; Turki, F.; Dörflinger, D.; Hoppe, A.: Field test results of interoperable electric vehicle wireless power transfer, in 2016 18th European Conf. on Power Electronics and Applications (EPE'16 ECCE Europe), Karlsruhe, 2016, 1–10.Google Scholar
[2] Kracek, J.; Svanda, M.; Mazanek, M.; Machac, J.: Semi-active 866 MHz RFID implantable tag fed by 6.78 MHz inductive wireless power transfer, in 2016 46th European Microwave Conf. (EuMC), London, 2016, 620–622.CrossRefGoogle Scholar
[3] Yuan, Q.; Chen, Q.; Sawaya, K.: Numerical analysis on transmission efficiency of evanescent resonant coupling wireless power transfer system. IEEE Trans. Antennas Propag., 58 (5) (2010), 1751–1758.Google Scholar
[4] Chen, Q.; Ozawa, K.; Yuan, Q.; Sawaya, K.: Antenna characterization for wireless power-transmission system using near-field coupling. IEEE Antennas Propag. Mag., 54 (4) (2012), 108–116.Google Scholar
[5] Rahola, J.: Power waves and conjugate matching. IEEE Trans Circuits Syst II Express Briefs, 55 (1) (2008), 92–96.Google Scholar
[6] Rollett, J.M.: Stability and power gain invariants of linear two ports. IRE Trans. Circuit Theory, 9 (1962), 29–32.CrossRefGoogle Scholar
[7] Inagaki, N.: Theory of image impedance matching for inductively coupled power transfer systems. IEEE Trans. Microw. Theory Tech., 62 (4) (2014), 901–908.Google Scholar
[8] Roberts, S.: Conjugate-image impedances. Proc. IRE, 34 (4) (1946), 198–204.Google Scholar
[9] Dionigi, M.; Mongiardo, M.; Perfetti, R.: Rigorous network and full-wave electromagnetic modeling of wireless power transfer links. IEEE Trans. Microw. Theory Tech., 63 (1) (2015), 65–75.Google Scholar
[10] Yuan, Q.; Niizeki, R.: Calculator of WPT Efficiency between Transmitting and Receiving elements,” in (invited) 2017 The Applied Computational Electrimagnetics Soiety (ACES), August 2017.Google Scholar
[11] Moon, J.; Hwang, H.; Jo, B.; Kwon, C.K.; Kim, T.G.; Kim, S.W.: Design and implementation of a high-efficiency 6.78 MHz resonant wireless power transfer system with a 5W fully integrated power receiver. IET Power Electron., 10 (5) (2017), 577–587.Google Scholar
[12] Shinki, Y.; Shibata, K.; Mansour, M.; Kanaya, H.: High-efficiency energy harvesting circuit with impedance matched antenna, in 2016 IEEE 18th Electronics Packaging Technology Conf. (EPTC), Singapore, 2016, 532–535.Google Scholar
[13] Kim, J.; Kim, D.H.; Park, Y.J.: Analysis of capacitive impedance matching networks for simultaneous wireless power. Transf. Multiple Devices, 62 (5) (2015), 2807–2813.Google Scholar
[14] Suzuki, S.; Abe, S.; Yuan, Q.: Efficiency of rectify circuit with matching circuit for wireless power transfer. IEICE Tech. Rep., 114 (246) (2014), 11–14, WPT2014-37.Google Scholar
[15] Rahola, J.: Optimization of matching circuits for antennas, in Proc. of the 5th European Conf. on Antennas and Propagation (EUCAP), Rome, 2011, 776–778.Google Scholar
[16] Pozar, D.M.: Microwave Engineering, 4th ed. Wiley International Edition, 2011.Google Scholar
[17] Yuan, Q.: Effect of loss of matching circuit on efficiency of wireless power transfer system. IEICE Tech. Rep., 114 (375) (2014), 31–34, WPT2014-69.Google Scholar
[18] Chen, Q.; Yuan, Q.: Antennas in wireless charging systems, in Handbook of Antenna Technologies, 2015, 1–24.Google Scholar
[19] Yuan, Q.; Suzuki, S.: Exact matching approach with circuit element ohmic loss, in 2016 International Symp. on Antennas and Propagation (ISAP), October 2016, 342–343.Google Scholar
[20] Collin, R.E.: Foundations for Microwave Engineering, 2nd ed., Wiley-Interscience, Singapore, 2001.Google Scholar