Title :
Built-in folded dipole antenna for handsets
Author :
Tanaka, T. ; Hayashida, S. ; Morishita, H. ; Koyanagi, Y. ; Fujimoto, K.
Author_Institution :
Dept. of Electr. Eng., Nat. Defense Acad., Yokosuka, Japan
Abstract :
One of the trends observed in mobile telephone technologies is the reduction in the size and weight of the handset. Accordingly, antennas used for such handsets must also follow the downsizing of the handset unit. Especially, built-in antennas are required for the latest handset antenna designs. A built-in folded dipole antenna (BFDA) for a handset is introduced and analyzed. The structure of the BFDA gives it a low profile. In the analysis, the electromagnetic simulator IE3D based on the method of moments (MoM) is applied to calculate antenna characteristics such as VSWR, current distribution and radiation patterns. The antenna has a self-balanced effect and a bandwidth of about 13%.
Keywords :
UHF antennas; antenna radiation patterns; current distribution; dipole antennas; mobile antennas; mobile handsets; mobile radio; 2900 MHz; MoM; VSWR; antenna characteristics; built-in antennas; built-in folded dipole antenna; current distribution; handsets; method of moments; mobile telephone; radiation patterns; Analytical models; Antenna radiation patterns; Current distribution; Dipole antennas; Electromagnetic analysis; Electromagnetic radiation; Moment methods; Pattern analysis; Telephone sets; Telephony;
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.2003.1217494
