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Dual and Wide-Band Inductively-Loaded Dipole-Based Antennas for WLAN/UMTS Applications

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3 Author(s)
Othman, M.A. ; Electron. & Electr. Commun. Eng. Dept., Cairo Univ., Giza, Egypt ; Abuelfadl, T.M. ; Safwat, A.M.E.

Electrically-small antennas can be designed using inductively-loaded dipoles. A simplified design procedure is carried out, using circuit models and EM simulations, to implement efficient dual and wide-band antennas with omni-directional radiation patterns. Measured performance agrees with simulations, and the proposed designs are employed for the UMTS 1.8/1.9/2.1/2.6-GHz and WLAN 2.4/3.6-GHz frequencies. A USB dongle antenna is prototyped to cover these frequency bands with impedance bandwidth reflection coefficient better than -10 dB.

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:61 ,  Issue: 3 )