SAR Induced by Low and High Directivity Antenna Apertures at Distances Greater than 25 mm from the Body
Keywords:
Antennas, arrays, directive, RF exposure, small antennas, specific absorption rate (SAR)Abstract
A comprehensive SAR study of low and high directivity antennas operated at distances greater than 25 mm but less than 200 mm from a large homogeneous elliptical phantom is presented. The study considers antennas, such as dipoles, monopoles, planar inverted-F antennas (PIFAs), IFAs, patches, patch arrays, and dipole arrays. SAR estimation methods for low directivity antennas for both near and far field conditions are proposed and elucidated. For directive antennas and arrays radiating directly towards the phantom interesting phenomena are observed that require more detailed investigation
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