Wavelength is also function of substrate so that is
lambda(eff)=lambda(0)/sqrt(Er(eff))
The wavelength which you found is valid for space but in the substrate it will be different in according with that relation.
Wavelength is also function of substrate so that is
lambda(eff)=lambda(0)/sqrt(Er(eff))
The wavelength which you found is valid for space but in the substrate it will be different in according with that relation.