Abstract
Current wireless power transfer (WPT) technology is widely used for various applications because of convenience and safety. One of the typical application of the WPT system is the near-field communication (NFC) system utilized mobile WPT system. However, WPT systems have problems with electromagnetic field (EMF) leakage which can cause electromagnetic interference (EMI) issues on the nearby electrical devices. In this paper, we propose the dual resonance NFC coil for EMF reduction. Proposed dual resonance coil generates resonance not only at the NFC operating frequency of 13.56 MHz but also at the wireless charging frequency 130 kHz. When comparing the proposed NFC coil with a typical NFC antenna, the total EMF level of the WPT system is reduced by 3.96 dB at 130 kHz without any effect at the NFC operating frequency of 13.56 MHz.
| Original language | American English |
|---|---|
| Journal | Proceedings of the 2019 IEEE International Symposium on Electromagnetic Compatibility, Signal and Power Integrity (2019, New Orleans, LA) |
| DOIs | |
| State | Published - Jul 26 2019 |
Keywords
- 3D Cellular Phones
- Coils
- Eddy Currents
- Electromagnetic Field
- Inductive Charging
- Inductive Power Transmission
- Magnetic Field
- Near Field Communication
- Wireless Power Transfer
Disciplines
- Electromagnetics and Photonics
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