New numerical data on open-end and gap stripline discontinuities

摘要

The excess charge technique in the spectral domain is applied to determining the quasistatic capacitances of the lumped equivalent circuits of open-end and gap stripline discontinuities. The numerical results obtained are used to check the validity of available closed-form expressions. These expressions are found to be inaccurate for stripline gaps when the strip width-ground plane spacing ratio is small.