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Dual-directional near field communication tag antenna with effective magnetic field isolation from wireless power transfer system
- Source :
- 2017 IEEE Wireless Power Transfer Conference (WPTC).
- Publication Year :
- 2017
- Publisher :
- IEEE, 2017.
-
Abstract
- Wireless power transfer (WPT) system has been developed to achieve higher charging power and convenient charging experience to users. In some mobile electronic devices with WPT system near-field communication (NFC) system can also be utilized. However, during the wireless charging, large voltage is induced in the NFC tag due to the magnetic fields from the wireless charging system. Consequently, the NFC tag must be isolated from the WPT system for simultaneous operation. In this paper, the NFC tag with dual-directional pattern antenna is presented for efficient isolation of the WPT system. The transmission coefficient between the proposed NFC tag and the NFC antenna is reduced by 3 dB at 13.56 MHz, while insertion loss between the tag and WPT coil is reduced by 18 dB at 110 kHz. Even with 10 mm misalignment between the proposed NFC tag and the WPT coils, 10 dB reduction of insertion loss can be achieved at 110 kHz.
- Subjects :
- Engineering
business.industry
020208 electrical & electronic engineering
Electrical engineering
020206 networking & telecommunications
02 engineering and technology
Inductive charging
Near field communication
Electromagnetic coil
0202 electrical engineering, electronic engineering, information engineering
Electronic engineering
Wireless
Insertion loss
Wireless power transfer
Antenna (radio)
business
Voltage
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- 2017 IEEE Wireless Power Transfer Conference (WPTC)
- Accession number :
- edsair.doi...........a078febb75ce8778740eea469a75719a