Design and analysis of GTEM cell using CST studio simulation

This paper presents the design of Gigahertz Transverse Electromagnetic (GTEM) cell with a dimension of 2.1m x 1.2m x 0.81m (L x W x H) over a frequency range from DC up to 1 GHz using finite-difference time-domain (FDTD) method in computer simulation technology (CST) microwave studio. Different design parameters such as tapering length of central conductor (septum), transition in the apex, septum height etc. was taken into consideration before finalizing the dimensions of the cell. The field uniformity inside the cell and volume of equipment under test (EUT) has been presented as per the standard IEC 61000-4-20. The GTEM cell can be used for EMC measurements i.e. Radiated Susceptibility and Emission testing. The designed GTEM cell will be implemented for commercial use in EMI/EMC division laboratory of SAMEER, Mumbai.