Title :
Analysis of a magnetically-shielded cellular phone antenna using finite-difference time-domain method
Author :
Yildirim, B.S. ; El-Sharawy, E.A.
Author_Institution :
Telecommun. Res. Center, Arizona State Univ., Tempe, AZ, USA
Abstract :
The characteristics of an antenna used in a transceiver system are studied by several researchers in detail. These characteristics are mainly the radiation pattern, input impedance and the gain of the antenna. This paper proposes a new antenna suitable for cellular phone applications to reduce hazardous electromagnetic radiation toward humans. The antenna is shielded with PEC and the shielding is coated by a lossy magnetic material. When a magnetically shielded antenna is used, it is shown that the near electric field for the user drops significantly.
Keywords :
antenna radiation patterns; antenna theory; cellular radio; electric impedance; electromagnetic shielding; finite difference time-domain analysis; health hazards; human factors; magnetic shielding; mobile antennas; monopole antennas; transceivers; 1.8 GHz; FDTD; PEC shielding; UHF radiation; antenna gain; cellular phone antenna; finite-difference time-domain method; hazardous electromagnetic radiation; human safety; input impedance; lossy magnetic material coating; magnetically-shielded cellular phone antenna; near electric field reduction; radiation pattern; transceiver system; Antenna radiation patterns; Cellular phones; Electromagnetic radiation; Humans; Impedance; Magnetic analysis; Magnetic losses; Magnetic materials; Magnetic shielding; Transceivers;
Conference_Titel :
Microwave Symposium Digest, 1996., IEEE MTT-S International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-3246-6
DOI :
10.1109/MWSYM.1996.511192
