Investigation on Specific Absorption Rate due to electromagnetic radiation

This paper presents the design of a planar printed antenna with ground plate is in coplanar configuration. The target of this paper is to introduce an antenna that supports all mobile and wireless services with low SAR value. The antenna operates for most of the mobile applications such as the GSM 850, GSM 900, DCS 1800, PCS 1900, and UMTS 2100. The antenna also support WiMAX, wireless local area network (WLAN), and the Industrial, Scientific, and Medical (ISM) bands. The proposed antenna consists of monopole, meander line, and a spiral EBG structure. Higher frequency bands are supported by both the meander line and the monopole since they acts as traveling-wave antennas at the high frequency bands. The high impedance surface property of the EBG structure is utilized here to reduce the radiation at the resonant frequency of the mobile band. The proposed antenna exhibits certain features such compact size, the multiband operation including the low frequency bands, and the low SAR radiation. The simulations were carried out in CST Microwave studio.