Surface current

  • An incident wave will excite surface currents (creeping waves) on a conductive surface.
  • Due to non-specular behavior, a surface current can propagate along the surface.
  • When the surface current encounters a discontinuity on the surface (break or gap) it can radiate.
  • Important to absorb the surface currents as they propagate.
  • Eccosorb LS is a series of absorbers with different dielectric properties to absorb surface currents over a wide range of frequencies.
  • Eccosorb GDS and Eccosorb MCS are magnetic absorbers which attract and dissipate the magnetic portion of the surface wave.
  • Surface wave absorbers act as a waveguide or conduit to guide and attenuate waves as they propagate