Boris Spokoinyi

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Microstrip line calculator

Based on Planar Microwave Engineering by T. H. Lee

Typical error <10%, if parameters within the conditions. Error is less for 25 ohm to 100 ohm Z0.

Conditions: W>H, T<H.



Distance units: 

Substrate Height, H  
Trace Width, W  
Trace Thickness, T (1oz=1.4mil)
Dielectric Constant (FR4: 4.2-4.8)
Intrinsic Impedance, Z0 Ohm
Fc (transverse res.) GHz
Ft (surface wave onset) GHz