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Method and apparatus for determining antenna radiation patterns

  • US 5,410,324 A
  • Filed: 03/13/1992
  • Issued: 04/25/1995
  • Est. Priority Date: 03/14/1991
  • Status: Expired due to Term
First Claim
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1. A method for determining the radiation pattern of a first antenna, where the antenna is placed fixedly in the quiet zone of a focusing system having a focal plane, comprising the steps of:

  • placing a modulated scattering probe array in the focal plane of the focusing system,placing a second antenna near the probe array,causing one of the two antennas to transmit electromagnetic radiation so as to cause the modulated scattering probe array to retransmit electromagnetic radiation,causing the other antenna to collect the electromagnetic radiation retransmitted by the probe array,determining, from the retransmitted electromagnetic radiation collected by the other antenna, a signal which represents the field at each point of the probe array, anddisplaying this signal as the radiation pattern of the first antenna.

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