Closed-form expressions for the current density on the ground plane of a microstrip line, with application to ground plane loss

摘要

In this paper closed-form expressions for the current density on the ground plane of a microstrip line are derived. The derivation is based on a quasistatic Green's function approach. These expressions are compared to both experimental and numerical values, and excellent agreement is demonstrated. The loss on a ground plane for a microstrip structure is calculated using these expressions, and comparisons with results from Wheeler's incremental inductance rule are made.