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Novel wide-band antennas for 2.4/5 GHz dual-band MIMO-OFDM WLAN systems

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5 Author(s)
A. Ando ; NTT Access Network Service Syst. Labs., NTT Corp., Yokosuka, Japan ; W. Yamada ; N. Kita ; D. Mori
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There have been many studies on the design and development of multi-band antennas for WLAN systems, both in the 2.4 GHz band of IEEE 802.11b/g and in the 5 GHz band of IEEE 802.11a. Many of these studies adopt the approach of using multi-band antennas that support these dual bands, but the bandwidths provided appear to be insufficient. The wide-band antenna is another approach to achieve the desired dual-band, but few reports have studied it. Wide-band antennas that can achieve the bandwidth required are extremely advantageous since they can be manufactured without fine adjustments, such as impedance matching. The paper proposes a novel wide-band antenna, a variant of the conventional discone antenna, for both the base station and the personal station in 2.4/5 GHz-band MIMO-OFDM WLAN systems. The structure of the antennas and their fundamental characteristics, such as the measured S-parameters and radiation patterns of isolated and mounted antennas, are shown for 2×2 MlMO-OFDM systems.

Published in:

2005 IEEE Antennas and Propagation Society International Symposium  (Volume:3A )

Date of Conference:

3-8 July 2005