Title :
Dual-frequency planar antenna for handsets
Author :
Chiba, N. ; Amano, T. ; Iwasaki, H.
Author_Institution :
Wireless Commun. Technol. Center, Toshiba Corp., Tokyo, Japan
fDate :
12/10/1998 12:00:00 AM
Abstract :
Cellular telephone handsets are now being designed to have dual-mode capabilities. In particular, GSM and DCS1800 modes are used in Europe. And PCS and AMPS modes are used in the USA. A novel planar dualband internal antenna for handsets which operates in the ~0.9 and 1.8 GHz bands is proposed. The dualband antenna has almost the same size as a conventional internal antenna operating in the 0.9 GHz band. Good dual-band operation was obtained for frequency ratios in the range 1.3-2.7
Keywords :
UHF antennas; cellular radio; microstrip antennas; mobile antennas; multifrequency antennas; telephone sets; transceivers; 0.9 GHz; 1.8 GHz; AMPS mode; DCS1800 mode; GSM mode; PCS mode; UHF antenna; cellular telephone handsets; dual-frequency planar antenna; dual-mode capabilities; dualband internal antenna;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19981652
