Abstract

This paper proposes a new mobile handset antenna structure with compact size and multibands to reduce the value of the specific absorption rate (SAR). The antenna is based on a monopole and a meander line structure that operates at the dual-bands from (587-977 MHz) and (1.67-8.63 GHz) to cover most of the mobile operating bands and other wireless applications. The covered bands are the GSM 900, DCS 1800, PCS 1900, UMTS 2100, and most of the LTE bands. Furthermore, it covers the ISM, WiMAX and the WLAN bands. In addition, an electromagnetic band gap (EBG) structure is embedded on the bottom layer of the substrate to reduce SAR. The EBG structure which has band gap capability and acts as AMC surfaces can reduce the surface waves and prevent the undesired radiation from the antenna. Thus, the EBG structure can reduce the electromagnetic fields toward the human head direction. The antenna volume is 27×25×0.8 mm3 (0.54 cm3), so the proposed antenna is suitable for many wireless handheld devices. The simulation results are compared to the experimental measurements where a good agreement is observed.

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