中文

     

Absorbers - Flexible Absorbent Material (FAM)

(5) Response Frequency (RFID)

  

Flexible Absorbent Material

(FAM)

 

    

FAM is a thin and flexible material, include soft rubber type and flexible sintered ferrite sheet with higher permeability. It can be cut any shape easily, freely arranged in space and provide effective EMI suppression in a wide frequency range (1MHz to 18GHz). Also can be a solution for RFID (Radio Frequency Identification) system on metal. It suitable for LF(125/134.2KHz) and HF(13.56MHz) bands on metal environment. It also works well in NFC (Near Field Communication)  technology application and Wireless Charger (WPC/Qi).

      

     (1) Features, Applications, Shapes        (2) Usage Examples (EMI)

     (3) Usage Examples (RFID/NFC)           (4) FAQ (RFID/NFC)

     (5) Response Frequency (RFID)            (6) Test Example for RFID

     (7) Effect Diagram                                (8) Material List, Structure

     (9)  Filter Effect Test                            (10) Magnetic Shield Test

     (11) Insertion loss                                (12) Return loss (3GHz)

     (13) Return loss (18GHz)                      (14) Permeability & How to choose FAM

                 

 

The variation of response frequency when RFID tag + FAM + metal (Reference) :

 

1. The response frequency is become lower when FAM thickness become thick but the signal strength with little difference.

 

2. The response frequency is increase when metal attached, but the signal strength is smaller if FAM thickness is thinner. It means the metal affect more when FAM is thinner.

 

* The dimensions of FAM and metal are 85.6x54mm.

* The RFID tag is standard ISO card size (85.6x54mm) with HF TI 2048 chip.

 

 

    

 More detail information :

 

  

Copyright 1999-2017 Crown Ferrite Enterprise Co.     www.cfe.com.tw       cfe@cfe.com.tw