Antennas

Antenna Overview (3)

  • Antennas can be made from any conductive material although high conductivity materials such as copper or aluminium are the preferred choices
  • RF currents flow only on or near the conductor’s surface (skin effect) and so antennas can be made from tubing without reducing performance
  • Meshed elements can be used provided the mesh holes are smaller than the wavelength at which the antenna will be used by a factor of 12 or more, e.g., some satellite dishes