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Compact MIMO antenna with frequency reconfigurability and adaptive radiation pattern.

Liu, H*; Gao, S*; Loh, T H (2013) Compact MIMO antenna with frequency reconfigurability and adaptive radiation pattern. IEEE Antennas Wirel. Propag. Lett., 12. pp. 269-272.

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Abstract

A frequency agile antenna for multiple-input multiple-output (MIMO) system with electronically steerable radiation patterns in azimuth plane was proposed in this paper. For a MIMO systems, the steerable radiation patterns were able to reduce the correlation between signals and increase the channel capacity. Each antenna in the MIMO system was a folded monopoles electronically steerable parasitic array radiator (FM-ESPAR) antenna. The radiation pattern of each FM-ESPAR antenna was steerable in azimuth plane from 0° to 360°. Its frequency was tunable between 2.3 GHz and 2.6 GHz. A top-disk loaded monopole and folded monopoles were employed to reduce the height of each FM-ESPAR antenna to 12 mm ( /10 at 2.4 GHz). The FM-ESPAR antennas were separated from each other by using a 30 mm long sleeve ground plane. The measured results confirm that the MIMO antenna comprising two FM-ESPAR antennas achieves good isolation at any angle between the main lobes of the FM-ESPAR antennas.

Item Type: Article
Keywords: MIMO, ESPAR, dynamic radiation pattern diversity (DRPD), beam steering, spatial correlation, small antenna
Subjects: Electromagnetics
Electromagnetics > Wireless Communications
Identification number/DOI: 10.1109/LAWP.2013.2245493
Last Modified: 02 Feb 2018 13:14
URI: http://eprintspublications.npl.co.uk/id/eprint/5771

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