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Open TEM Cells for EMC Pre-Compliance Testing

Open TEM cells are specialized stripline devices used for pre-compliance radiated emission and immunity testing of electronic devices in a lab environment. They allow engineers to detect and analyze electromagnetic emissions and immunity behavior of products before sending them to a formal compliance lab, helping reduce redesign risk and testing costs. The open design, without side walls, makes it convenient to place the device under test (DUT) and observe changes in radiated emission performance during design iterations. These TEM cells work with a spectrum analyzer or EMI receiver to produce a reliable indication of the DUT’s EMC performance.

Features

Key capabilities and advantages

  • Designed for radiated emission and immunity pre-compliance testing.
  • Stripline structure provides 50 Ω characteristic impedance.
  • Open design for easy placement and inspection of the DUT.
  • Suppressed higher-order wave modes for better frequency performance.
  • Supplied with DC block and RF termination accessories.
  • Works with spectrum analyzers and EMI receivers for EMC evaluation.
  • Helps engineers identify EMC issues early in design cycle.
  • Portable and practical for lab or workshop environments.

Specification

Technical specifications and parameters

Dimensions (L)390 x (W)100 x (H)62 mm
Septum height 28 mm
Rectangular area under the septum 19 cm x 7 cm x 2,8 cm
TEM cell connectors N-female
Nominal cell impedance 50 Ohm
Wave impedance 377 Ohm
Maximum RF input power 10W (limited by supplied 50 Ohm Termination)
Input return loss S11 up to 3.15 GHz < -15dB
Transmission loss up to 3 GHz < 3dB, up to 6 GHz < 4dB

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