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Microstrip Transmission Line Calculator
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The characteristic impedance (Zo) of a wire over ground can be calculated with the active calculator.

[diagram of PCB layers]

Relative Dielectric Constant

εr :

Relative magnetic permeability

µr :

Diameter of wire

d : mm (a=d/2)

Height

h : mm

Length

L : mm



Characteristic Impedance Zo : Ohms
Propagation Delay Tp : ns/mm
Propagation Speed Vp : mm/ns


Lineic Inductance L : pH/mm
Lineic Capacitor C : fF/mm
Resonance frequency F0 : MHz