This calculator allows you to estimate the effective dielectric constant (εeff) and the guided wavelength (λg) of a slot line as a function of the operating frequency and the relative dielectric constant of the substrate. It helps in designing and analyzing microwave transmission structures.
Formulas
εeff = (εr + 1) / 2
λg = λo / √εeff
where λo = c / f
c = 3 × 10⁸ m/s, f = frequency in Hz
Explanation of formulas
The effective dielectric constant (εeff) represents the average between the air and the dielectric material used, influencing the signal propagation speed. The guided wavelength (λg) corresponds to the signal wavelength inside the line, reduced compared to that in free air due to the substrate.
Uses of the calculator
- Design and analysis of RF and microwave slot lines.
- Evaluation of signal propagation on different substrates.
- Optimization of high frequency printed circuits.
- Useful tool for engineers, RF circuit designers and electronics students.