Plotting Z0 and Eeff

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When your circuit is de-embedded, the characteristic impedance, Z0, and the effective dielectric constant, Eeff, of the transmission line are calculated for each port. These values are calculated for all port types except diagonal ports, ports which share a reference plane and via ports.

NOTE: For ABS sweeps, Z0 and Eeff are calculated only for discrete frequencies. These values are not calculated at adaptive data points.

Calculating Z0 and Eeff for Boxwall Ports

Lengths at Multiples of a Half-Wavelength

Lengths Much Greater than One Wavelength

Single Transmission Line

Coupled Transmission Lines