Title :
Study of human head effects on UWB antenna
Author :
Cai, Ailian ; See, Terence S P ; Chen, Zhi Ning
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
This paper studies the effects of the human head on an ultra wideband (UWB) antenna on a PCB. To investigate the effects, a numerical model of average dielectric constant and conductivity over the UWB range is used to approximate the human head. The performance of the UWB antenna is compared in free space and on the human head in terms of the impedance match, gain, and radiation patterns. The study has shown that the presence of the head has significant effects on the impedance and radiation performance of the UWB antenna.
Keywords :
antenna radiation patterns; electrical conductivity; finite difference time-domain analysis; impedance matching; monopole antennas; permittivity; ultra wideband antennas; 3 to 8.5 GHz; PCB mounted antenna; UWB antenna; antenna gain; antenna human head effects; conductivity; cuboid head model; dielectric constant; finite difference time domain method; free space operation; impedance match; planar monopole antenna; radiation patterns; Antenna radiation patterns; Conductivity; Dielectric constant; Humans; Impedance; Numerical models; Pattern matching; Performance gain; Ultra wideband antennas; Ultra wideband technology;
Conference_Titel :
Antenna Technology: Small Antennas and Novel Metamaterials, 2005. IWAT 2005. IEEE International Workshop on
Print_ISBN :
0-7803-8842-9
DOI :
10.1109/IWAT.2005.1461078
