Title :
A novel technique to increase the realized efficiency of a mobile phone antenna placed beside a head-phantom
Author :
Sager, M. ; Forcucci, M. ; Kristensen, T.
Author_Institution :
Nokia Denmark, Copenhagen, Denmark
Abstract :
It is demonstrated how the realized efficiency of a mobile phone antenna, placed beside a head-phantom, can be increased approximately 1 dB by adding a parasitic radiator on the front side of the ground plane. The effect of the parasitic radiator is a cancellation of a part of the near field impinging on the head. This reduces the amount of power dissipated in the head and hence, the realized efficiency is increased.
Keywords :
antenna radiation patterns; antenna theory; biological effects of radiation; electromagnetic wave absorption; health hazards; mobile antennas; mobile handsets; radiowave propagation; ground plane front side; head dissipated power; head-phantom; impinging near field cancellation; mobile phone antenna; parasitic radiator; realized efficiency; Brain modeling; Costs; Dual band; Ellipsoids; GSM; Manufacturing; Mobile antennas; Mobile handsets; Prototypes; Resonance;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2003. IEEE
Conference_Location :
Columbus, OH, USA
Print_ISBN :
0-7803-7846-6
DOI :
10.1109/APS.2003.1219406
