Bias-dependent phase delay of Schottky contact microstrip line

Schottky contact lines are a form of microstrip on a semiconducting substrate, the strip of which forms a rectifying metal¿semiconductor contact. Such a line has an extremely low phase velocity that is determined by the ratio of the depletion-region width to the substrate thickness, i.e. by the bias. Measurements agree well with theoretical expressions that are deduced from a parallel-plate-waveguide model.