Feeders

1:1 Voltage Balun

  • This voltage balun is similar to the 4:1, but uses 3 windings connected in series
  • The coils may use an air core or a ferrite core
  • Current flowing through the lower coil induces an equal and opposite voltage in the upper coil
  • The primary circuit contains N turns and the secondary N, so the input impedance is
  • ZL(N ÷ N)2 = ZL