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MIMO antenna arrays built on metamaterial substrates

  • US 8,836,608 B2
  • Filed: 12/01/2009
  • Issued: 09/16/2014
  • Est. Priority Date: 12/01/2008
  • Status: Active Grant
First Claim
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1. A method of improving the capacity and mutual coupling performance of a MIMO antenna array, comprising:

  • selecting NT transmitter antennas and NR receiver antennas each comprising a metamaterial substrate so as to form a resonance structure based on induced inductance of the metamaterial substrates combined with the capacitance of the metamaterial substrates;

    determining a statistical description of a transmission environment including said MIMO antenna array, where the statistical description is provided in a matrix Hi, where Hi is the normalized channel matrix corresponding to an ith channel realization where Hi includes interference and signal to noise as a product of the location and spacing of the NT transmitter antennas and NR receiver antennas;

    using the normalized channel matrix to compute the channel capacity C for each array configuration for a given subcarrier; and

    placing said NT transmitter antennas and said NR receiver antennas, mounted on said metamaterial substrates, in an array configuration so that the resulting antenna array has channel capacities C that are approximately the same as channel capacities C of relatively larger antenna arrays formed without said metamaterial substrates.

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