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Space/angle diversity configurations for cellular antennas

  • US 5,872,548 A
  • Filed: 02/04/1997
  • Issued: 02/16/1999
  • Est. Priority Date: 02/04/1997
  • Status: Expired due to Fees
First Claim
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1. A cellular antenna system, providing onmidirectional coverage with improved space/angle diversity, comprising:

  • a support structure to position antennas at four successive laterally separated locations (locations I, II, III and IV) spaced around a vertically extending axis, said locations being at non-adjacent positions with lateral separations selected to provide space diversity operation;

    eight antennas, including mounted at each said location a pair of antennas pointing in nominally orthogonal directions, and for each said pair an antenna at a different said location with a pointing direction between said orthogonal directions;

    the pointing direction of each of said eight antennas differing nominally by an integral multiple of 45 degrees from the pointing direction of each other said antenna.

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