IEC 61000-4-39 High-Field RF Immunity Testing at SIQ

SIQ provides IEC 61000-4-39 RF immunity testing for electronic equipment exposed to strong, localised electromagnetic fields generated by RF transmitters in close proximity. Testing is performed in the frequency range from 380 MHz to 6 GHz, with achievable electric field strengths of up to 600 V/m.

IEC 61000-4-39 addresses immunity test methods specifically intended for scenarios where the RF source is located very close to the equipment under test (EUT), resulting in spatially inhomogeneous fields.

Safety-Critical and Automotive Applications

This test method is particularly suitable for safety-related applications, where the correct operation of electronic systems must be ensured even under severe electromagnetic stress. SIQ supports manufacturers in demonstrating the immunity of equipment intended for automotive installation, including systems operating in close proximity to vehicle antennas and high-power RF sources.

Typical applications include:

• Safety and control electronics,
• Automotive ECUs and in-vehicle communication modules,
• Equipment intended for use in environments with expected high electromagnetic field levels.

Test Setup and Conditions

IEC 61000-4-39 testing at SIQ is performed under controlled and repeatable laboratory conditions:

• Test distance: 10 cm between RF source and EUT
• Observation window: 10 cm × 10 cm exposure area
• Field strength: up to 600 V/m
• Frequency range: 380 MHz to 6 GHz
• Modulation: multiple modulation types

All tests are conducted in accordance with documented procedures, with defined test configurations, measurement uncertainty considerations, and traceability in line with ISO/IEC 17025 requirements.

Find out more about EMC testing at SIQ.