Title :
Effects of Phase Difference in Dipole Phased-Array Antenna Above EBG Substrates on SAR
Author :
Kwok-Hung Chan ; Ikeuchi, Ryosuke ; Hirata, Akihiko
Author_Institution :
Dept. of Comput. Sci. & Eng., Nagoya Inst. of Technol., Nagoya, Japan
Abstract :
In this letter, we investigate the specific absorption rate (SAR) of a dipole phased-array antenna above an electromagnetic band-gap (EBG) substrate. A two-element array antenna above an EBG substrate is considered for fourth-generation mobile applications at the 3.5-GHz band. The computational results indicate that the use of an EBG substrate in a phased-array antenna can provide an SAR reduction of over 70%. The SAR reduction also depends on the phase difference of the phased-array antenna.
Keywords :
antenna phased arrays; biological effects of fields; dipole antenna arrays; electromagnetic wave absorption; microwave antenna arrays; photonic band gap; EBG substrates; SAR; dipole phased array antenna; electromagnetic bandgap substrate; fourth generation mobile applications; frequency 3.5 GHz; phase difference effects; specific absorption rate; two-element array antenna; Antenna arrays; electromagnetic band-gap (EBG) structure; finite-difference time-domain (FDTD) method; specific absorption rate (SAR);
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2013.2260717
