Impedance matching network for ground eliminated open‐ended resonant coil structure in distributed wireless power transmission systems
| Autor: | Telnaz Zarifi, Pedram Mousavi, Kambiz Moez |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Resonant inductive coupling
Power transmission business.industry Computer science Node (networking) 020208 electrical & electronic engineering Impedance matching 020206 networking & telecommunications 02 engineering and technology Signal Atomic and Molecular Physics and Optics Virtual ground 0202 electrical engineering electronic engineering information engineering Damping factor Electronic engineering Wireless Electrical and Electronic Engineering business |
| Zdroj: | IET Science, Measurement & Technology. 11:856-860 |
| ISSN: | 1751-8830 |
| DOI: | 10.1049/iet-smt.2016.0325 |
| Popis: | This study reports a novel technique utilising a standing-wave node as a virtual ground to implement an impedance matching network and power level tuning in a ground eliminated (GE) open-ended resonant coil structure. This technique with GE open-ended coils can potentially be used in wireless power transmission (WPT) systems, where an unknown metallic, ungrounded, arbitrary environment is used as a signal propagation medium to deliver electric power to several distributed nodes. To satisfy WPT standards the proposed resonant WPT system with the matching network is implemented and tested at 13.56 MHz. A comprehensive study of the GE open-ended resonant coil structure demonstrates ground-plane effects and the necessity of an impedance matching network in no-ground signal situations. The experimental results confirm the theoretical analysis presenting 9% improvements in mismatch efficiency, and 13.1 times in power transmission efficiency at 13.56 MHz when the matching network is deployed. |
| Databáze: | OpenAIRE |
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