Effect of interplane capacitance on the radiation from printed traces

Abstract

The paper examines the effect of the capacitance between power and ground planes on the direct radiation from signal traces. The analysis is based on a full wave moment method solution combined with a multi-port network formulation. Techniques that exploit interplane capacitance by reducing the distance between power and ground planes are found to also reduce the radiation from traces over a certain frequency range. Numerical results are presented.