Investigation and Study of Mode Splitting in Near Field Inductive Communication Systems

• Autorzy: Thanh H. D. , Agbinya J. I.

Identyfikatory

DOI

10.2478/eletel-2013-0022

• Języki publikacji: EN

Abstrakty

EN

Frequency splitting is a near field inductive communication phenomenon where the resonant frequency divides into many separate frequencies or to different modes. In this paper, we show that this phenomenon depends on the coupling coefficients or the natural response of the circuit by using the circuit theory to derive these splitting frequencies. Also, the rules for the general matrix that is used to solve for splitting frequencies are also demonstrated clearly. Mode splitting is observed for peer-to-peer, three coils and four coil systems due to the existence of the nearest and second neighbour interactions. In particular, two, three and four modes have been analysed for two, three, and four coil systems respectively. However, the number of modes for these systems can be changed according to the degree of coupling. The differences in the resultant splitting frequencies with and without the second neighbour interaction are shown in the simulation results. Furthermore, we assess the system performances regarding to power efficiency through the inductive transfer functions. Besides, either coupling coefficients at resonance or the simplified transfer functions in some specific scenarios can be obtained by having an insight into these transfer functions. Finally, we recognise and propose that splitting frequency phenomenon can be deployed to transmit signals at many frequencies concurrently.

Słowa kluczowe

EN

splitting frequencies; modes; nearest and second neighbour interactions; coupling coefficient; conventional resonant frequency; power efficiency; transfer function

• Wydawca: Polish Academy of Sciences, Committee of Electronics and Telecommunication
• Czasopismo: International Journal of Electronics and Telecommunications
• Rocznik: 2013
• Tom: Vol. 59, No. 2
• Strony: 185--194
• Opis fizyczny: Bibliogr. 8 poz., wykr.

Twórcy

autor

Thanh H. D.

• Electronic Engineering, La Trobe University, Melbourne, Australia

autor

Agbinya J. I.

• Electronic Engineering, La Trobe University, Melbourne, Australia

Bibliografia

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• [2] A. P. Sample, D. A. Meyer, and J. R. Smith, “Analysis, Experimental Results, and Range Adaption of Magnetically Coupled Resonators for Wireless Power Transfer,” IEEE Transaction on Industrial Electronics, vol. 58, no. 2, pp. 544-554, February 2011.
• [3] B. L. Cannon, J. F. Hoburg, D. D. Stancil, and S. C. Goldstein, “Magnetic Resonant Cupling As a Potential Means for Wireless Power Transfer to Multiple Receivers,” IEEE Transactions on Power Electronics, vol. 24, no. 7, pp. 1819-1825, July 2009.
• [4] J. W. Kim, H.-C. Son, K.-H. Kim, and Y.-J. Park, “Efficiency Analysis of Magnetic Resonance Wireless Power Transfer With Intermediate Resonant Coil,” IEEE Antennas and Wireless Propagation Letters, vol. 10, pp. 389-392, 2011.
• [5] T. Imura, H. Okabe, and Y. Hori, “Basic experimental study on helical antennas of wireless power transfer for Electric Vehicles by using magnetic resonant couplings,” Proceedings of IEEE Vehicle Power and Propulsion Conference, pp. 936-940, 2009.
• [6] A. Scher, “Tutorial: Positive Coupling, Negative Coupling, and All That,” If Microwaves Could Talk, 2010.
• [7] D. Ahn and S. Hong, “A study on Magnetic Field Repeaters in Wireless Power Transfer,” IEEE Industrial Electronics, 14 February 2011, Accepted for publication on 30 January, 2012.
• [8] J. I. Agbinya, “A Magneto-Inductive Link Budget for Wireless Power Transfer and Inductive Communication Systems,” Progress in Electromagnetics Research C, vol. 37, pp. 15-28, 2013.