Adaptive array antenna unit
AssigneeNTT Mobile Communications Network, Inc.
InventorsTAISUKE IHARA, RYO YAMAGUCHI
Life of this patent
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Abstract
An adaptive array antenna for use in a base station according to the CDMA mobile communication system. A number of antenna elements greater than the number of elements (a reference number) which would be required when directional antenna elements each having a beam width which is the same as a sector angle are used to provide a service area having a sector angle which is narrower than the element beam width, or a number of antenna elements each having a beam width broader than the sector angle which is less than the reference number may be used to define a service area.
Claims7
An array antenna unit for use in a base station according to the CDMA mobile communication system for adaptively controlling an antenna directivity so as to suppress interference waves;
- characterized in that:
- antenna elements, which constitute the array antenna unit, each have a beam width of directivity in the horizontal plane narrower than the width of a service sector area.
In an array antenna unit for use in a base station according to the CDMA mobile communication system for adaptively controlling the antenna directivity response so as to suppress interference waves;
- characterized in that:
- antenna elements, which constitute the array antenna unit, each have a beam width of directivity in the horizontal plane broader than the width of a service sector area.
Dependencies are inferred from the claim text.