Countermeasures for radiation immunity testing using a small loop antenna.

[Application Example] Measures for Radiation Immunity Testing Using a Small Loop Antenna

Our company can conduct a simple "radiated immunity test" at frequencies from 80MHz to 500MHz with an electric field strength of 30V/m for pre-evaluation before bringing the equipment under test (EUT) to the EMC test site and for confirming the effectiveness of countermeasures. To perform the radiated immunity test at low frequencies of 80MHz to 500MHz with an electric field strength of 30V/m, we use a very confined space, the anechoic chamber, compared to a shielded room, by placing a small loop antenna close to the EUT (within ~5cm). [Test Procedure] [Calibration] 1) Place the electric field probe at the EUT installation position for calibration. 2) Adjust the level of the signal generator to achieve the desired electric field strength. 3) Determine the level of the signal generator. [Test] 1) Install the EUT and set it to the level of the signal generator determined during calibration. 2) Conduct tests to check if the EUT malfunctions. 3) Repeat the tests while moving the antenna up, down, left, and right. *For more details, please refer to the PDF document or feel free to contact us.

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