This converter makes it possible to determine the TEM wavelength of a signal from its frequency and the relative permittivity of the medium. It is particularly useful for microwave and RF applications where the propagation speed is affected by the surrounding material.
Formula
λ = 300 / (f × √ε r )
Explanation of the formula
The wavelength λ (in arbitrary units consistent with the input frequency) is calculated by dividing 300 by the product of the frequency f (in GHz) and the square root of the relative permittivity ε r . This approach takes into account the reduction in propagation speed in dielectric media other than vacuum.
Uses
- Design and analysis of antennas, waveguides and microwave circuits.
- Calculation of the physical distance corresponding to one signal cycle for the sizing of RF components.
- Evaluation of the effect of dielectric materials on signal propagation.
- Educational applications to understand the link between frequency, propagation speed and wavelength.