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Calculates the impedance of a microstrip. This calculator takes trace thickness into account and is not limited to a range of w / h ratios. Units do not matter as long as they are consistent - use the same units for w, h, and t. See Wheeler for equation.
Calculates the differential impedance of a microstrip pair. Zo is the impedance of an individual trace. Units do not matter as long as they are consistent.
Zdiff = 2 * Zo ( 1 – 0.48 e-0.96s/h )