Linear or Planar Retrodirective Antenna System.
DEPARTMENT OF THE NAVY WASHINGTON D C
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The patent describes a method and apparatus for obtaining automatic retrodirective performance from a linear or planar electromagnetic antenna array. The system may be employed in an active or passive manner and accomplishes selective retrodirectivity by the manipulation of the beam terminals on a multiple beam matrix. Also, control of the reradiated beam pattern is possible. Furthermore, this retrodirective system can also identify the angle of incidence of any particular transmission, and may therfore be employed as direction finding equipment.
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