A GTEM (Gigahertz Transverse Electro Magnetic) cell is a test site for efficiently performing both radiated immunity and emissions testing in a single, controllable and shielded environment. Compared to other test sites, GTEM testing is faster with high accuracy and excellent reproducibility. ■■ Meets basic standard: IEC/EN 61000-4-20 ■■ Meets standards for emissions testing: CISPR 14-1, IEC 61000-6-3 and IEC 61000-6-4 for EUTs without connected cables ■■ Meets standards for immunity testing: EN 60118-13 ■■ Ideal for design qualification and pre-certification ■■ Fields generated are largely homogeneous and simple to calculate ■■ Efficient power conversion requires smaller power amplifier ■■ Excellent VSWR over the entire frequency range – no need for measurement of reflected power GTEM stands for Gigahertz Transverse Electro Magnetic. This special type of cell has the advantage of having no cut-off frequency as do other types of TEM waveguides. In principle, the GTEM cell is a coaxial line expanding pyramidally and having an impedance of 50 Ω. At its end, the line is terminated by a combination of termination resistors and RF absorbers designed and constructed to match the above mentioned impedance.
