This article focuses on multi-antenna systems for Ultra Wideband (UWB) communications. Conceptual antenna arrangements and specific designs are reviewed according to the aimed applications. Some specific parameters to characterize antennas for MIMO-UWB applications are discussed. The perspectives in sense of future developments of UWB multi-antennas and their functionalities are also suggested. In this article patent based information on multiple antenna for UWB communication is also discussed.
Keywords: Array antennas, multi-antennas, multiple-input multiple-output (MIMO), ultra wideband (UWB) antenna
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