Title :
SAR and radiation characteristics of dipole antenna above finite EBG substrate in presence of cubic head model
Author :
Ikeuchi, Ryo ; Hirata, Akimasa
Author_Institution :
Dept. of Comput. Sci. & Eng., Nagoya Inst. of Technol., Nagoya, Japan
Abstract :
The present study investigates the performance of a dipole antenna above different electromagnetic band-gap (EBG) substrate for realizing a low specific absorption rate (SAR) antenna. We then investigate the effect of the number of unit cell of the EBG substrate on the antenna performance. The substrate with 24(4×6) EBG patches is considered as a reference. The dipole antenna above a substrate with sixteen EBG unit cells was shown to provide comparable SAR reduction and improved radiation efficiency as compared with the reference structure. A dielectric substrate with further reduced number of EBG patches did not provide sufficient SAR reduction and behave properly as a periodic structure.
Keywords :
dipole antennas; electromagnetic wave absorption; finite difference time-domain analysis; health and safety; microwave antennas; periodic structures; radiation protection; 24(4×6) EBG patches; EBG unit cells; SAR characteristics; SAR reduction; antenna performance; cubic head model; dielectric substrate; dipole antenna; electromagnetic band-gap substrate; finite EBG substrate; improved radiation efficiency; low specific absorption rate antenna; periodic structure; radiation characteristics; Antenna radiation patterns; Dipole antennas; Finite difference methods; Metamaterials; Periodic structures; Substrates; electromagnetic band-gap (EBG) structure; fourth-generation wireless communications system; handset antenna; specific absorption rate (SAR);
Conference_Titel :
Electromagnetic Compatibility (EMC EUROPE), 2012 International Symposium on
Conference_Location :
Rome
Print_ISBN :
978-1-4673-0718-5
DOI :
10.1109/EMCEurope.2012.6396908
