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Folded loop antenna for mobile hand-held units

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4 Author(s)
Katsibas, K.D. ; Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA ; Balanis, C.A. ; Tirkas, P.A. ; Birtcher, C.R.

The vertical folded loop antenna, modeled as wire and printed radiating element mounted on a conducting box, simulating a cellular telephone with and without dielectric coating, is analyzed. The finite-difference time-domain (FDTD) method is used to calculate radiation patterns and input impedance. The results are compared with measurements and with NEC data. Very good agreement is obtained in all cases. Parasitic loading is used to enhance the bandwidth of the printed element. The antenna meets the design requirements for existing and future mobile communication systems

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:46 ,  Issue: 2 )