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Abstract
A new L-shaped slot dipole for multiple-input–multiple-output (MIMO) antenna system with an L-shaped slit is presented for WLAN and WiMAX applications. The L-shaped slot provides two bands at 2.4 and 5.2 GHz, and the third frequency at 3.5 GHz is achieved by introducing the L-shaped slit. The MIMO antenna consists of four symmetrical antenna elements. Each element is fed through a 50- microstrip feed line-coupling electromagnetic field to the slot. A high isolation of 16 dB among the four antennas is achieved for an antenna spacing less than 0.05
. The MIMO structure gives high gain (
dB), low correlation (
), and high radiation efficiency (
) The results indicate that the proposed MIMO antenna can provide spatial or pattern diversity to increase data capacity of wireless communication systems.
Acknowledgements
The authors sincerely appreciate the help of S. Abbasi for her kind assistance in the preparation of this manuscript. The authors would also like to acknowledge the reviewers for their constructive comments.