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Cases:

EX1: Center signal line over a grounded semiconducting substrate, with coplanar "ground straps," 50 microns separation (W = 50 microns).

EX2: Center signal line over a grounded semiconducting substrate, with coplanar "ground straps," 5 microns separation (W = 5 microns).

EX3: "Microstrip" signal line over a grounded semiconducting substrate:

EX4: Signal line with coplanar "ground straps," 50 microns separation, no lossy substrate (W = 50 microns).

EX5: Signal line with coplanar "ground straps," 5 microns separation, no lossy substrate (W = 5 microns):

Simulation Results:

EX1: Signal line over semiconducting substrate, coplanar "ground straps," W = 50 microns.

EX2: Signal line over a semiconducting substrate, coplanar "ground straps," W = 5 microns.

EX3: "Microstrip" signal line over a grounded semiconducting substrate.

EX4: Signal line with coplanar grounds, W = 50 microns, no lossy substrate.

EX5: Signal line with coplanar grounds, W = 5 microns, no lossy substrate.

copyright 1997, Dean Neikirk and Sangwoo Kim, The University of Texas at Austin.