Title :
Reduction of human body effect on mobile handset antennas
Author :
Grigoriev, Andrey
Author_Institution :
Radioelectron. Dept., St.-Petersburg State Electrotech. Univ. LETI, St.-Petersburg, Russia
Abstract :
Electrodynamics approach is used to study human body effect on handset antenna parameters. Power dissipation in a human head is mainly determined by near electric field of an antenna while its radiation pattern is formed mainly by far field. So it is possible to control these parameters more or less independently. For example, near field of multipole radiators quickly decay with distance. A proposed quadrupole radiator, composed of two PIFA-type antennas mounted on a dielectric carrier, has efficiency 4 dB higher than the conventional PIFA in the vicinity of a human head phantom.
Keywords :
antenna radiation patterns; biological effects of fields; electrodynamics; mobile antennas; mobile handsets; planar inverted-F antennas; PIFA-type antennas; antenna radiation pattern; dielectric carrier; electrodynamics approach; human body effect reduction; human head phantom; mobile handset antennas; multipole radiators; near electric field; power dissipation; quadrupole radiator; Dipole antennas; Electric fields; Metamaterials; Phantoms; Telephone sets; cellular phones; human body effect; mobile antenna; multipoles;
Conference_Titel :
Microwave Conference (EuMC), 2013 European
Conference_Location :
Nuremberg
