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Reflector antenna

  • US 7,081,863 B2
  • Filed: 12/25/2003
  • Issued: 07/25/2006
  • Est. Priority Date: 08/13/2003
  • Status: Active Grant
First Claim
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1. A reflector antenna device, comprising:

  • an auxiliary reflector that receives an electric wave radiated from an opening portion by a primary radiator and reflects the electric wave; and

    a main reflector that receives the electric wave that is reflected by the auxiliary reflector and radiates the electric wave to a space,characterized in that the configurations of the auxiliary reflector and the main reflector are designed such that an electric power in an area of the main reflector where the auxiliary reflector is projected on the main reflector in parallel with the radiating direction of the electric wave due to the main reflector is equal to or lower than a predetermined first threshold value, and a radiation pattern of the antenna which is determined by the area of the main reflector other than the area has a desired characteristic.

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