Antennas

Quarter Wave Ground Plane (2)

  • Radiation is omni directional and is maximum at about 30° elevation to the ground
  • Elevating the feed point and drooping the radials downward at an angle of 25-30° will help provide a better match to 50Ω coaxial cable;  elevated radials are normally tuned by cutting to length of λ/4
  • Increasing the number of radials improves the efficiency of a ground plane antenna