Estimation of electromagnetic noise from digital IC in GHz band by using small size TEM cell

摘要

This paper describes a method of using small size TEM cells to evaluate electromagnetic noise from digital ICs in the GHz band. In this evaluation method, the device under test (DUT) is rotated in four directions and the output voltage is measured; then, the magnetic field coupling components and the electric field coupling components are calculated. For this evaluation method, used small size TEM cells with the upper limit frequency extended to 3GHz, and conducted verification with a micro-strip line. As a result, demonstrated that this evaluation method can be effectively applied at frequencies up to 3GHz.