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Dual-frequency planar antenna for handsets

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3 Author(s)
Chiba, N. ; Wireless Commun. Technol. Center, Toshiba Corp., Tokyo, Japan ; Amano, T. ; Iwasaki, H.

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

Published in:

Electronics Letters  (Volume:34 ,  Issue: 25 )