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Adaptive electronically steerable array (AESA) system for multi-band and multi-aperture operation and method for maintaining data links with one or more stations in different frequency bands

  • US 9,244,155 B2
  • Filed: 01/25/2012
  • Issued: 01/26/2016
  • Est. Priority Date: 02/09/2011
  • Status: Active Grant
First Claim
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1. An adaptive electronically steerable array (AESA) system suitable for use on a vehicle, the system comprising:

  • a plurality of arrays, each comprising a plurality of radiating elements; and

    control circuitry coupled to the plurality of arrays to configure the arrays for switchable multi-band and multi-aperture operations, wherein the control circuitry is configuredto use a line-of-sight (LOS) vector to direct the array for communications with a communication station as the vehicle maneuvers,to use the LOS vector to reconfigure the arrays to switch between communicating with a first communication station and a second communication station, andto switch between communicating with a first communication station within a first frequency band through a first aperture, the first frequency band established for communication with the first communication station, and communicating with the second communication station within a second frequency band through a second aperture, the second frequency band established for communication with the second communication station, the first and second frequency bands being widely-spaced frequency bands having at least a five percent carrier frequency separation,wherein the first frequency band is a higher-frequency band than the second frequency band, andwherein for the multi-band and the multi-aperture operations, the control circuitry;

    configures each element to operate as a single aperture to transmit RF signals for communicating with the first communication station within the first frequency band, andconfigures a plurality of two or more elements to operate as a single element, single aperture, to transmit coherently combined RF signals that have the same phase shift, for communicating with the second communication station within the second frequency band.

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