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508SN Datasheet(PDF) 5 Page - 3M Electronics |
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508SN Datasheet(HTML) 5 Page - 3M Electronics |
5 / 12 page 3 Metal Antenna tag Antenna tag Eddy current generation (Magnetic flux attenuation) 3M FFDM Magnetic Flux Metal Improve NFC/RFID Antenna Read Range with 3M Flux Field Directional Materials (FFDM) Improve Power Transfer Efficiency and Range with 3M Flux Field Directional Materials (FFDM) 3M™Flux Field Directional Materials for NFC/RFID and Wireless Power Applications Transmit and Read Source Antenna 3M Solution: Thin / high permeability, low signal loss FFDM (Optimized to 13.56MHz) 3M Flux Field Directional Materials EM80KM and RFIC30 improve EM energy transfer via inductive coupling (short range) or magnetic coupled resonance (longer range) 3M Flux Field Directional Materials EM16TF and RFIC15 reduce eddy current losses and improve read range 3M Solution: High permeability, low energy loss FFDM at operating frequencies 3M Flux Field Directional Materials Receiving Antenna Coil Sending Antenna Coil 3M FFDM 3M FFDM Battery/Metal B z 3M™Flux Field Directional Materials (FFDM) for Magnetic Shielding Applications 3M FFDMs can be used to provide magnetic shielding of stray field generating devices or materials that impact neighbor device or component performance (i.e. inductor, wireless power, etc.). Antenna Metal/Battery Antenna on polyimide carrier. EM field along Y-Axis in free space Antenna with 3M FFDM between the antenna and metal/battery parts. EM field strength increased significantly with 3M FFDM use. Antenna near metal or battery surface. EM field significantly reduced due to eddy current losses of EM field into the battery/metal parts. Side view of antenna with 3M FFDM between antenna and metal/battery surface. 3M FFDM Antenna 3M FFDM Metal/ Battery 25 20 15 10 5 0.1 1 10 Frequency (MHz) 100 Vertical to Mag Field Parallel to Mag Field H-Field of Device No Magnetic Shielding H-Field of Device FFDM Magnetic Shielding Strong Mag. Field Component near Strong H-Field Component near Weak H-Field 3M FFDM Sheet Material Strong Mag. Field Weak Mag. Field 3M FFDM Type EM80KM 0.02 mm Soft Magnetic Layer Thickness KEC Magnetic Field Test Method 80 mm x 80 mm sample/40 mm plate s hole size 140 120 100 80 60 40 20 0 10M 100M Frequency (Hz) AB5016RF |
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