How to reproducibly measure the unintended EM-emission from handheld devices

First this paper will explain the need to reproducibly measure the unintended radiation from handheld battery powered devices. The established test sites like Open Area Test Sites (OATS) fulfil the reproducible requirement but they are to expensive and need a big space. It is shown that the standard farfield conditions can be found in a TEM waveguide. At last it will be demonstrated how to get the same measurement results from a TEM-cell measurements as from an OATS.