TEM Cells

A TEM or transverse electromagnetic cell is a type of test chamber used to perform EMC or EMI testing. It allows for the creation of electromagnetic fields in a small enclosed setting, or the detection of electromagnetic fields radiated within the chamber. TEM cells are ideal for RF pre-compliance testing, as they are low cost, have a larger bandwidth as most of the measurement antennas and require less F power to create strong electromagnetic fields compared to a setup with an antenna.

Within the two outer metal sheets lies the septum, forming a 50 Ohm transmission line that can be connected to standard coaxial cables. The interior of the cell acts similar as a waveguide and converts electric signals into homogeneous electromagnetic fields with approximately transverse mode distribution, similar to free space. The electric and magnetic field inside the cell depends on the applied RF power and septum height and can be accurately calculated. The cell acts to either receive internal emissions or transmit emissions within the chamber.

When measuring radiated emission tests, one end of the TEM-cell is connected to a spectrum analyzer. A 50 Ohm RF termination is connected to the other end.

Model
Frequency range for immunity tests
Frequency range for radiated emission tests
Max. input power
Outer dimensions (LxWxH)
Usable area under septum
Septum height
Application
Default accessories
Product Page

TBTCO
9 kHz – 3.15 GHz
9 kHz – 6 GHz
100 W
* Requires 100W termination
390 x 100 x 62 mm
190 x 70 mm
28 mm
Radiated emission and immunity
pre-compliance testing
DC-block, 10W termination, N-
male to N-male 75 cm RG223 cable
TBTCO

TBTC1
9 kHz- 2.1 GHz
9 kHz – 6 GHz
500 W
* Requires 500W termination
390 x 200 × 108 mm
190 × 130 mm
50 mm
Radiated emission and immunity
pre-compliance testing
DC-block, 25W termination, N-
male to N-male 75 cm RG223 cable
TBTC1

TBTC2
9 kHz – 1.2 GHz
9 kHz – 6 GHz
500 W
* Requires 500W termination
636 x 300 × 205 mm
230 x 280 mm
100 mm
Radiated emission and immunity
pre-compliance testing
DC-block, 25W termination, N-
male to N-male 75 cm RG223 cable
TBTC2

TBTC3
9 kHz – 700 MHz
9 kHz- 6 GHz
500 W
* Requires 500W termination
1038 × 501 x 305 mm
360 x 480 mm
150 mm
Radiated emission and immunity
pre-compliance testing
DC-block, 25W termination, N-
male to N-male 75 cm RG223 cable
TBTC3

TBGTC1 GTEM
9 kHz – 6 GHz
9 kHz – 6 GHz
600W
1452 x 780 x 520 mm
250 x 250 mm at the location of the EUT panel
230 mm at the location
of the EUT-board
Radiated emission and immunity
pre-compliance testing
N-Male to N-Male 75 cm RG223 cable
Wooden EUT panel
TBGTC1