학술논문

Rigorous Network and Full-Wave Electromagnetic Modeling of Wireless Power Transfer Links
Document Type
Periodical
Source
IEEE Transactions on Microwave Theory and Techniques IEEE Trans. Microwave Theory Techn. Microwave Theory and Techniques, IEEE Transactions on. 63(1):65-75 Jan, 2015
Subject
Fields, Waves and Electromagnetics
Impedance
Ports (Computers)
Couplings
Generators
Wireless communication
Resonant frequency
Load modeling
Conjugate matching
efficiency
network theory
resonant coupling
wireless power transfer
Language
ISSN
0018-9480
1557-9670
Abstract
The proposed approach makes use of full-wave electromagnetic modeling of wireless power transfer links in order to derive the network characterization, e.g., in terms of scattering or impedance matrix. Once the latter is obtained, we show that network theory provides the appropriate matching impedances for achieving either maximum efficiency, maximum power on the load, or conjugate matching. The proposed approach also permits to derive closed-form matching networks and expressions for power and efficiency. An example of full-wave numerical electromagnetic modeling of a wireless power transfer link is presented. The selected example, which is similar to the experiment published by Kurs , shows the importance of selecting the appropriate source/load impedance for obtaining significative results.