Abstract
This paper presented the effect of dielectric properties of henna-based composite towards the performance of the tag antenna for UHF-RFID application. The dielectric properties focused in this work were dielectric constant and loss tangent. Henna-based composite was developed with different amount of henna loading as the substrate for RFID passive tag. The design of antenna was optimized using CST Microwave software to achieve resonance frequency at 915 MHz. The output parameters from this work were reflection coefficient (dB), bandwidth (MHz), gain (dB), directivity (dBi), antenna efficiency (%) and voltage standing wave ratio (VSWR). In conclusion, dielectric properties of the substrate affect all the output parameters significantly except for directivity value.
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