Analytic Radiation Models of a Microstrip Line on a Slotted Ground Plane

Abstract

In this Letter, analytic models for EM radiation analysis of a microstrip line (trace) on a slotted ground plane are proposed. The EM radiation is separated by the effects of trace and slot, and analytic radiation models for each effect are presented. The radiated electric field in the far region is calculated at a frequency up to 10 GHz, and the effect of the slot size on the radiation is examined. The proposed models are in good agreement with the numerical results while requiring a negligible computation time.

Keywords

• microstrip line
• ground plane
• slot
• printed circuit boards
• common-mode current
• radiation