A Novel High Electric Field EMS Probe for Automotive and Consumer System Levels

In recent automotive interior advancements, the most notable change is incorporating in-vehicle displays. In recent years, with the emergence of audio-visual entertainment demands, emphasis has shifted towards upgrading the visual experience. Large screens and high-definition touchscreen automotive displays have successively appeared. The introduction of these novel applications, coupled with stringent electromagnetic compliance regulations, has brought forth EMS issues that were previously unseen. The current method for EMS testing involves using antennas to excite the entire surface with electromagnetic fields. However, this method only determines whether the product passes the test and does not pinpoint the areas causing failure. To address this limitation, an attempt is made to rapidly identify the failing sections by using a probe to excite the same field strength. Currently, available probes are incapable of generating a field strength of 200V/m before 1GHz, thereby failing to meet the original EMS specifications achieved by antennas. This paper introduces a novel EMS probe designed to generate a field strength 200V/m in the frequency range of 270MHz to 1GHz. Utilizing this probe for testing will facilitate quicker identification of the areas causing product failure, enabling subsequent improvements.