Design of dual-band conformal amc integrated antenna for sar reduction in wban

Abstract

—A wearable, miniaturized, dual-band, Artificial Magnetic Conductor (AMC) integrated antenna operating on ISM band (2.38–2.47 GHz) and WLAN band (5.11–5.31 GHz) is proposed for Wireless Body Area Network (WBAN). A dumbbell shaped unit-cell is designed to achieve zero reflection phase and modified material characteristics. When 2 × 2 array of dumbbell shaped AMC is put underneath the monopole, the antenna gain increases up to 9.5 dB and 8.1 dB at 2.43 GHz and 5.2 GHz, respectively. Different bending conditions have been considered to confirm the robustness of the AMC antenna. Debye model is used to approximate the dielectric properties within phantom tissue model. Antenna shields most of the backward radiation and reduces the specific absorption rate (SAR) of the integrated antenna by more than 95% in 1-g of phantom hand tissues at both the frequencies. The acquired results exhibit that the AMC antenna is more secure for on body applications.