volume | PIER Journals

Abstract

A flexible semicircular ring slot antenna with an artificial magnetic conductor (AMC) structure for wireless body area network application is proposed in this paper. The AMC structure is an array of the double split ring resonator (DSRR) unit cells. According to the analysis of the DSRR unit cell, the volume of the AMC element is miniaturized for applications such as wearable technology. The measured impedance bandwidth of the proposed antenna is observed to be 2.34-2.61 GHz, which covers the 2.4 GHz Industrial Scientific Medical (ISM) band. The simulated half-power beamwidths are 81.1° and 70.1° in the E-plane and H-plane, respectively, and the front-to-back ratios are 17.51 dB in both the E-plane and H-plane. The calculated specific absorption rates (SARs) taken over the volume containing a mass of 1 g of tissue (U.S. standard) and 10 g of tissue (E.U. standard) are both less than the limitations. In conclusion, it is proper to use the proposed flexible antenna in wearable applications.

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Dr. Said A. Abushamleh