Abstract
ISO 11452-2 is a well-known standard that tests the electromagnetic immunity of a device under test(DUT) in an anechoic chamber. ISO 11452-2 needs a large antenna and high-power amplifier to provide a high electric field in the chamber. In this test setup, finding the root cause and debugging issues is not easy because of varied limitation conditions. In this paper, we suggest two L-probe-fed circular patch antennas that emit a high electric field(over 800 V/m in the radar pulse ranges) on DUTs in the near field. Because the DUT is located 50 mm away from the antenna, the power amplifier consumes a small amount of power for the same electric field in ISO 11452-2. The proposed procedure has the advantage of industry usefulness with fast, handy, and cost-effective radiated immunity debugging of the DUT without considering the environment required by ISO 11452-2 and certain types of monitoring equipment with high immunity.
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