Title :
A card-type inverted LFL antenna for dual-frequency operation
Author :
Nakano, H. ; Morishita, K. ; Sato, Y. ; Mimaki, H. ; Yamauchi, J.
Author_Institution :
Coll. of Eng., Hosei Univ., Koganei, Japan
Abstract :
This paper presents a new dual-frequency antenna, called an inverted LFL antenna (InvLFL). The InvLFL is made of a thin conducting film. It has a flat structure (card-type structure), where both the radiation elements and the ground plate lie in the same plane. The card-type structure facilitates the use of the InvLFL in PC card devices for personal computers or for use inside mobile phone handsets. Responding to a demand for dual-frequency operation at 2.45 GHz and 5.2 GHz (frequencies used for wireless LAN communications), this paper describes the design process and reveals the radiation characteristics obtained using the finite-difference time-domain method (FDTDM).
Keywords :
UHF antennas; antenna radiation patterns; conducting bodies; finite difference time-domain analysis; microwave antennas; mobile handsets; multifrequency antennas; thin films; 2.45 GHz; 5.2 GHz; FDTDM; PC card devices; card-type inverted LFL antenna; dual-frequency antenna; finite-difference time-domain method; ground plate; mobile phone handsets; personal computers; radiation elements; thin conducting film; Conductive films; Finite difference methods; Frequency; Microcomputers; Mobile communication; Mobile handsets; Process design; Telephone sets; Time domain analysis; Wireless LAN;
Conference_Titel :
Wireless Communications and Applied Computational Electromagnetics, 2005. IEEE/ACES International Conference on
Print_ISBN :
0-7803-9068-7
DOI :
10.1109/WCACEM.2005.1469738
