Effective Permittivity (εr eff)

⊡ Effective Permittivity (εr eff)

Calculate the effective dielectric constant and impedance of a microstrip or stripline.

Substrate Permittivity (εr)

Trace Width (W)

Substrate Height (H)

$$\varepsilon_{r,\text{eff}} = \dfrac{\varepsilon_r+1}{2} + \dfrac{\varepsilon_r-1}{2}\cdot\dfrac{1}{\sqrt{1+12/u}} \quad u = W/H$$

W/H Ratio

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Effective Permittivity (εr_eff)

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Characteristic Impedance (Z₀)

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Phase Velocity

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Wavelength @ 1 GHz

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