Formula:
Formula for Half-Wave Dipole Antenna Length:
The total physical length (L) of a half-wave dipole antenna is primarily determined by the operating frequency (F) and the velocity factor (VF) of the wire used.
- Length (L) in Meters:
L = (150 / F(MHz)) × VF - Length (L) in Feet:
L = (492 / F(MHz)) × VF
Where:
- F(MHz): Desired operating frequency in Megahertz.
- VF: Velocity Factor (or k-factor), a correction for the speed of light in the wire. Typically 0.95 for bare copper wire, 0.98 for open wire line, or 1.0 for free space (theoretical).