NET AND PARTIAL INDUCTANCE OF A MICROSTRIP GROUND PLANE

A knowledge of the net inductance of the ground plane can aid in the a nalysis and investigation of printed circuit board emissions. In this paper, we present a method, based on the concept of partial inductance , to determine the net inductance of the ground plane associated with a microstrip line, This method is based on a previously derived expres sion for the current density on the ground plane, We show calculations for the net, self-partial, and mutual-partial inductance of the groun d plane for various trace geometries of practical interest, We also il lustrate how the classical transmission line inductance of a microstri p line can be obtained from the concept of partial inductance, Compari sons to different experimental results are also given.