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LENS FED ANTENNA ARRAY SYSTEM

  • US 3,852,761 A
  • Filed: 04/23/1973
  • Issued: 12/03/1974
  • Est. Priority Date: 04/23/1973
  • Status: Expired due to Term
First Claim
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1. An antenna array system comprising:

  • an enclosed transmission line including a pair of parallel conductive plates spaced from each other with a dielectric medium therebetween and a conductive ring-like band about the periphery thereof, a first plurality of probes spaced in a ring-like pattern coaxial with the conductive band and that extends near the periphery of the enclosed transmission line, each of said first plurality of probes extending through one of said plates in a coupling manner with said transmission line, a second plurality of probes being arranged in a pattern clustered near the center of the enclosed transmission line, said second plurality of probes extending through one of said plates in a coupling manner to said transmission line formed between said plates, a plurality of radiating elements, means coupling each one of said radiating elements to a selected one of said first plurality of probes, means coupled to said second plurality of probes for exciting said second plurality of probes in a manner to produce a given electromagnetic wave energy distribution within said transmission line with maximum power emanating from the center of said enclosed transmission line in only selected radial directions in a plane substantially parallel to said plates, said first plurality of probes being disposed in a radial direction from said second plurality of probes a distance to cause only selected probes of said first plurality of probes to be appreciably excited in response to said given electromagnetic wave energy distribution and thereby produce a given radiated pattern from said radiating elements and means for changing said given electromagnetic wave energy distribution to control the radiated pattern from said radiating elements.

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