There IEC 6 EMC standard, require a TEM cell for radiated susceptibility and radiated emission tests. TEM cells are used in final compliance certification tests. The Equipment Under Test (EUT) is placed on the bottom ground plane as in Open Area Test Site (OATS) and in accordance with the shielded enclosure conditions. The radiation field emanating from a device (under test) located in the cell can also be detected through the signal generator port connected to an EMI receiver or a spectrum analyzer. An external test signal applied through the input port of the TEM cell generates a consistent and predictable (plane wave) test field inside the TEM cell. It can be used to calibrate E-field broadband probes for testing radiated E-field immunity as well as for measuring radiated emission from a product with a spectrum analyzer/EMI receiver.TEM cell generates a consistent electromagnetic field for testing small RF devices such as wireless pagers, receivers, portable phones, etc. EM waves generated in the cell propagate in transverse mode and have the same characteristics as a plane wave. Transverse Electro-Magnetic (TEM) cell or Crawford cell (named after its inventor) is used to generate accurate electromagnetic waves over a wide frequency range: DC (0 Hz) to GHz.
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