Title :
Dipole Antenna Above EBG Substrate for Local SAR Reduction
Author :
Ikeuchi, Ryosuke ; Hirata, Akihiko
Author_Institution :
Dept. of Comput. Sci. & Eng., Nagoya Inst. of Technol., Nagoya, Japan
fDate :
7/3/1905 12:00:00 AM
Abstract :
This letter investigates the performance of a dipole antenna above an electromagnetic band-gap (EBG) substrate to realize a low specific absorption rate (SAR) antenna. The frequency band considered is 3.5 GHz, which is assigned to fourth-generation mobile communications. One of the motivations for this proposal is that the size of the EBG substrate can be small enough for a handset. The dipole antenna above the EBG substrate was found to reduce the local SAR in a cubic head model by 84% as compared to the local SAR of a perfect electric conductor. The radiation efficiency was also improved by 10%. These results were also confirmed for a realistic head model.
Keywords :
4G mobile communication; conductors (electric); dipole antennas; microwave antennas; photonic band gap; EBG substrate; dipole antenna; efficiency 10 percent; electric conductor; electromagnetic band-gap substrate; fourth-generation mobile communications; frequency 3.5 GHz; local SAR reduction; low specific absorption rate antenna; radiation efficiency; Dipole antennas; Magnetic heads; Metamaterials; Periodic structures; Substrates; Telephone sets; Electromagnetic band-gap (EBG) structure; handset antenna; specific absorption rate (SAR);
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2011.2167119
