| dc.description.abstract | Today, modern society lives and works with wireless devices especially mobile phones due
to their numerous multimedia services and applications that make life easier. These mobile
phones emit electromagnetic radiations and during their usage they are usually held in close
proximity to the head which means that there is constant interaction with electromagnetic
fields and non-ionizing radiation. Research has been carried out to investigate the effect of
mobile phone antenna radiation on the human head however, most of this research focused on
the 900MHz and 1800 MHz frequencies. Over the past three decades, there has been rapid
advancements in technology which have led to new networks such as the 3G, 4G and 5G that
operate at completely different frequencies. This research aimed at investigating the effect
of non-ionizing radiations from a mobile phone antenna on the human head via the Specific
absorption rate (SAR) at the different operating frequencies that is the 900 MHz, 1800 MHz,
2100 MHz and 2600 MHz. The effects of varying the distance between the mobile phone
antenna and the human head from 2-10mm in steps of 2 mm was also investigated. The High
Frequency Structure Simulator was used to design the four microstrip antennas, model the
human head and then assess the effect of the phone antenna radiation on the human head
via the local Specific Absorption Rate. The results of this research showed that the local SAR
value decreased with increase in the distance from exposure source and all the SAR values
obtained were below the 1.6 W/kg threshold set by FCC. | en_US |
