RFID antenna system
An antenna system, 1. RFID technology, applied in the field of RFID antenna systems
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[0021] as attached figure 1 The RFID antenna system of the present embodiment shown is the back case 3 of SIM card 1, battery 5, mobile phone shell successively from inside to outside, and built-in antenna 2 is set on the described mobile phone SIM card 1, and described built-in antenna 2 and SIM card The RFID reader chip provided on the body is connected, and the inner surface of the back shell 3 is provided with an external antenna 4, and the external antenna 4 is electrically connected to the internal antenna 2, and the external antenna 4 is arranged on the edge of the housing The strip antenna forms a loop antenna along the edge contour of the housing, and the external antenna 4 is placed on the back shell 3 of the mobile phone shell, which avoids the influence of the mobile phone battery on the signal. The external antenna 4 generates a strong magnetic field power and electrons The tag establishes data communication; through the combination of the external antenna 4 and ...
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