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NFC/WPC Dual Magnetic sheet
Recently, Wireless Power Transfer (WPT) system in accordance with Qi standard gets installed in smart phone.
On Qi standard, transmitting Power is Up to 5 W and frequency is 100 kHz to 205 kHz.
But in a smart phone, its Receiving coil is attached on battery or some metallic objects, and that causes a problem of decreasing transmission efficiency.
Then in order to solve this problem, magnetic sheet must be used between Rx-coil and battery
| Product Name | NFC-WPC Dual Magnetic sheet | |
|---|---|---|
| Material Number | MS-K50 | MS-K100 |
| Thickness of magnetic layer | 50µm | 100µm |
| Applicable Frequency | 135kHz, 530kHz, 13.56MHz | |
| Application | NFC, HF-RF tag, Wireless charging on metal | |
| Permeability (13.56MHz) | 250 < (µ') | |
| Permeability (100kHz) | 300 < (effective µ) | |
| Materials | Amorphous metal, Acrylic adhesive | |
| Standard Size | 45mm*100mm | |
| Operation temperture | -30℃~85℃ | |
| RoHS Material Compliance | ROHS Compliance, Halogen Free | |
Before installation of MS-K50 When a WPT coil is installed nearby metallic object, its magnetic flux generate the eddy current on surface of metallic plate. Then it also generates cancelling magnetic flux and causes the decrease of transmission efficiency.
After installation of MS-K50 By means of attaching magnetic sheet between coil and metallic plate, magnetic flux get through into magnetic sheet and improve its transmitting efficiency.