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Internal triple-band folded planar antenna design for third generation mobile handsets

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5 Author(s)
See, C.H. ; Mobile & Satellite Commun. Res. Centre, Bradford Univ., Bradford ; Abd-Alhameed, R.A. ; Excell, P.S. ; McEwan, N.J.
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A novel internal triple-band folded planar antenna for mobile handsets is introduced, formed by modifying the geometry of a rectangular patch antenna to include a shorting pin, folded sides, a shorted microstrip stub and a notch. The size of the antenna is successfully reduced to a volume of 34 times 34 times 7 times mm3. The antenna is mounted on a finite ground plane of 50times100 times mm2. The impedance bandwidth achieved was 29.7% (equivalent to return loss%%10%dB); this covers the DCS1800, PCS1900 and UMTS 2000 bands. The characteristics of the proposed antenna, including impedance bandwidth and far field radiation patterns are discussed theoretically and experimentally; the simulated and measured results show good agreement. The tuning effects of the geometry parameters on impedance matching of the proposed antenna are also investigated.

Published in:

Microwaves, Antennas & Propagation, IET  (Volume:2 ,  Issue: 7 )