what is ISO15693 ICODE2 RFID coil

Radio RFID coil Frequency Identification Systems (RFID) are widely used nowadays and allow advanced solutions for a variety of applications in the area of authentication, ticketing, access control, supply management, parking, payment, vending,etc. The example presented here is a RFID Reader Coil "P81" from and was modeled and solved using the frequency domain solver of CST MICROWAVE STUDIO®. The sensitivity of the computed complex input impedance with respect to substrate tolerances is computed and was compared to measurement data.

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The imported 2D-DXF CAD model was converted to a 3-D structure in CST MWS by extruding the metal profile to create a thickness of 35 microns and adding a substrate thickness of 1.6mm as shown in Figure 1 (right). The desired output quantity for this loop antenna was the complex input impedance for the coil without any other circuit elements, such as a tuning capacitance to adjust the resonance. The inductance of the antenna is defined by its coil- geometry, the capacitance is determined by the dielectric properties of the substrate FR4. Tolerance variations in FR4 thickness and dielectric constants are well documented in [1], [2] and [3]. A study was performed in order to demonstrate the impact of manufacturing tolerances on the resonance drifts.Figure 2 shows published measurement data

This ISO15693 ICODE2 RFID coil could be done for RFID transponder.

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