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Ferro-electric frequency selective surface radome

  • US 5,600,325 A
  • Filed: 06/07/1995
  • Issued: 02/04/1997
  • Est. Priority Date: 06/07/1995
  • Status: Expired due to Fees
First Claim
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1. A ferro-electric frequency selective surface radome comprising:

  • a grating screen having first and second surfaces and comprising a plurality of printed radiating elements;

    inner and outer voltage controlled dielectric layers disposed on the first and second surfaces of the grating screen;

    relatively high ohms per square resistive films disposed on exposed surfaces of the inner and outer voltage controlled dielectric layers; and

    voltage control means coupled to the respective resistive films for controlling the voltages applied to the respective inner and outer voltage controlled dielectric layers by actively varying the dielectric permittivity of the resistive films around a small percentage of its nominal value to provide a ground on outer surfaces of the dielectric layers.

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