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SL 90

Strip Line 90 Ω

SL 90zoom
  • EMC tests for vehicle components immunity to RF fields
  • Conformity with the requirements of ISO 11452-5
  • Efficient power conversion provides high field with minimum power

The transversal electromagnetic mode which can be developped in the SL 90 strip line, provides the opportunity for doing EMC testing inside the strip line. The geometrical dimensions having a line impedance of Z = 90 Ω. At the end, the line is matched by a 90 Ω termination. Typical for this strip line is the low power request for high field strength values. The strip line is specified in ISO 11452-5 ‘Road Vehicles electrical disturbances through radiated narrowband electromagnetic energy: Measurement procedure for components part 5: Strip Line’. The SL 90 allows testing electrical/electronic sub modules (EUB) and their associated cables. Standards like BMW GS 95002 allow both emission and immunity testing with the strip line. Although emission testing is derived from ISO 11452-5 where the strip line is exclusively used for immunity tests. BMW GS 95002 provides additional hints. The limit line is given as interference voltage level in dμBV.

Parameter Value
Height of the septum

150 mm

Frequency range

DC to 1000 MHz

Max. input power

150 W

Input power for 10 V/m

approx. 50 mW (17 dBm)

Typical impedance

90 Ω





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