Example via pitch

The pitch bound uses c/(10*f*sqrt(er)) with the same 28 GHz.

Worked example

Characteristic impedance 60.637 ohm

Equation

Z0 = 60*pi/sqrt(eps_eff) / (K(k1)/K'(k1) + K(k2)/K'(k2))

Effective permittivity 2.532

Equation

eps_eff uses the ratio of the two elliptic ratios.

Dielectric loss 1.4382 Np/m

Equation

alpha_d = pi*f*sqrt(eps_eff)/c * er*(eps_eff-1)/(eps_eff*(er-1)) * tan delta. Unit: Np/m.

This result needs: conductivity, Phi factor.

This result needs: conductivity, roughness Rz.

Via pitch bound 559.657 µm

Equation

Via pitch bound = c/(10*f_max*sqrt(er)).

Dielectric loss and conductor loss are in nepers per metre (Np/m).

The starting size is 622 µm by 254 µm gaps on 508 µm height, at 28 GHz.