Design of a Wearable Monopole RFID Antenna Integrated in Smart Clothing for Tracking Human Movements

摘要

In this paper, we present a new design of wearable planar monopole RFID antenna. It is designed to operate in Industrial, Scientific and Medical (ISM) band of 2.45 GHz, which makes it a tracking candidate for body worn RFID passive application. The proposed antenna consists of a truncated ground plane of dimensions 90mmx18mx0.035mm, and using the wearable Jeans substrate with pmb εr=1.68, Loss Tangent of pmb δ = 0.025 and a thickness 1 mm. The feed-line is connected with the radiating element of the antenna at a convenient driving point position, which results in a good impedance matching, low return loss and voltage standing wave ratio. The simulated results from CST software are used to design and compare the performance of the antenna. The proposed antenna gives good performance in context of efficiency, Return loss (S11), gain and bandwidth.