Characteristic improvement on conducted disturbance measuring apparatus using TEM cells

A conducted disturbance measuring apparatus using two TEM cells needs a jig which connects an AC plug of an EUT to coaxial connector of the TEM cell. We designed the low loss jig for improving the voltage division factor (VDF) of the apparatus. In this paper, the VDF with the designed jig is evaluated. As a result, the VDF is improved maximum 20 dB compared with that by using the conventional one, and the effectiveness of the designed jig is confirmed.