Calculateur de Longueur d'Antenne — Formule
## Antenna Length
### Formulas
**Wavelength = c / f = 299.792 / f(MHz) meters**
**Half-wave dipole = wavelength / 2**
**Quarter-wave monopole = wavelength / 4**
In practice, antennas are shortened 2-5% due to end effects and conductor diameter.
### Formulas
**Wavelength = c / f = 299.792 / f(MHz) meters**
**Half-wave dipole = wavelength / 2**
**Quarter-wave monopole = wavelength / 4**
In practice, antennas are shortened 2-5% due to end effects and conductor diameter.
Exemple Résolu
Design an antenna for 433 MHz ISM band.
- Wavelength = 299.792 / 433 = 0.6924 m
- Half-wave dipole = 0.6924 / 2 = 34.62 cm
- Quarter-wave = 0.6924 / 4 = 17.31 cm