TEM Cells

A TEM Cell (Transverse Electromagnetic Cell) is a specialised, “shielded-box” transmission line used to perform radiated emissions and immunity testing on a small scale. It acts as a compact, cost-effective alternative to a full-sized anechoic chamber, allowing engineers to create or measure electromagnetic fields in a controlled, enclosed environment.

Why Choose a TEM Cell?

Consistent Field Uniformity: Unlike testing in an open room where reflections and ambient noise interfere, a TEM cell creates a very stable and uniform electromagnetic field between its internal "septum" and the outer walls.
Ambient Noise Rejection: The shielded enclosure blocks out external radio signals (Wi-Fi, Cellular, Radio), allowing you to measure the tiny emissions from your device with extreme clarity.
Space and Cost Efficiency: They provide a professional testing environment that fits on a laboratory workbench, costing a fraction of the price of a walk-in shielded room or EMC chamber.
Bidirectional Capability: A single TEM cell can be used for both Emissions (measuring what comes out of your product) and Immunity (blasting your product with RF to see if it fails).

Core Applications

Pre-compliance Radiated Emissions: Quickly checking if a PCB or small electronic assembly exceeds legal limits (like CISPR 22/32) before sending it for final, expensive certification.
RF Immunity Testing: Using a signal generator and amplifier to subject a small device to high-strength fields (e.g., 10V/m or more) to test for software crashes or sensor interference.
Sensor Calibration: Providing a known, precise electromagnetic field strength to calibrate RF probes, field meters, or wireless sensors.
Shielding Effectiveness Testing: Placing a component inside the cell to measure how much RF energy it leaks, helping engineers optimize gaskets, enclosures, and cable shielding.

SKUImageBrandImmunity Test Freq.Radiated Emission Freq.Input PowerOuter DimensionsUsable Area Under SeptumSeptum HeightApplicationAdditional FeaturesStockPrice
TBTC1-DemoImage of TbtcTekbox9 kHz - 2.1 GHz9 kHz – 6 GHz500 W390 x 200 × 108 mm190 × 130 mm50 mmRadiated emission and immunity,
pre-compliance testing		DC-block*, 10W termination*, N-male to N-male 75 cm RG223 cable*2£110.00
TBGTC1Image of Tekbox tbgtc1 r telonic ukTekbox9 kHz – 6 GHz9 kHz – 6 GHz600 W1452 x 780 x 520 mm250 x 250 mm230 mmRadiated emission and immunity,
pre-compliance testing		N-male to N-male 75 cm RG223 cable*, Wooden EUT panel*3£1,925.00
TBTC0Image of TbtcTekbox9 kHz – 3.15 GHz9 kHz – 6 GHz100 W390 x 100 x 62 mm190 x 70 mm28 mmRadiated emission and immunity,
pre-compliance testing		DC-block*, 10W termination*, N-male to N-male 75 cm RG223 cable*1£419.00
TBTC1Image of TbtcTekbox9 kHz - 2.1 GHz9 kHz – 6 GHz500 W390 x 200 × 108 mm190 × 130 mm50 mmRadiated emission and immunity,
pre-compliance testing		DC-block*, 10W termination*, N-male to N-male 75 cm RG223 cable*On Backorder£559.00
TBTC2Image of Tbtc2Tekbox9 kHz – 1.2 GHz9 kHz – 6 GHz500 W636 x 300 × 205 mm230 x 280 mm100 mmRadiated emission and immunity,
pre-compliance testing		DC-block*, 10W termination*, N-male to N-male 75 cm RG223 cable*On Backorder£745.00
TBTC3Image of TbtcTekbox9 kHz – 700 MHz9 kHz – 6 GHz500 W1038 × 501 x 305 mm360 x 480 mm150 mmRadiated emission and immunity,
pre-compliance testing		DC-block*, 10W termination*, N-male to N-male 75 cm RG223 cable*On Backorder£933.00
  • RentalImage of Tbtc

    Rental: TEKBOX TBTC1 Open TEM Cell

    £110.00 (£132.00 inc. VAT)

    2 in stock (can be backordered)

    Availability: Stock models delivered next working day (UK only) for orders placed before 16:30 (Mon - Fri)

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  • Image of Tekbox tbgtc1 r telonic uk

    TEKBOX TBGTC1 GTEM Cell

    £1,925.00 (£2,310.00 inc. VAT)

    3 in stock (can be backordered)

    Availability: Stock models delivered next working day (UK only) for orders placed before 16:30 (Mon - Fri)

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  • Image of Tbtc

    TEKBOX TBTC0 Open TEM Cell

    £419.00 (£502.80 inc. VAT)

    1 in stock (can be backordered)

    Availability: Stock models delivered next working day (UK only) for orders placed before 16:30 (Mon - Fri)

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  • Image of Tbtc

    TEKBOX TBTC1 Open TEM Cell

    £559.00 (£670.80 inc. VAT)

    Available on back-order

    Availability: Stock models delivered next working day (UK only) for orders placed before 16:30 (Mon - Fri)

    Add to basket
  • Image of Tbtc2

    TEKBOX TBTC2 Open TEM Cell

    £745.00 (£894.00 inc. VAT)

    Available on back-order

    Availability: Stock models delivered next working day (UK only) for orders placed before 16:30 (Mon - Fri)

    Add to basket
  • Image of Tbtc

    TEKBOX TBTC3 Open TEM Cell

    £933.00 (£1,119.60 inc. VAT)

    Available on back-order

    Availability: Stock models delivered next working day (UK only) for orders placed before 16:30 (Mon - Fri)

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