KEYCOM provides solutions in the 300 GHz to 1 μHz frequency range (SHF/EHF/MW/UHF/VHF/ULF).
We undertake designing, manufacturing and measuring. Please feel free to contact us.

Shield Effect Measurement Systems

Model No. sem

KEYCOM has been developing to provide accurate and practical shielding effect(shielding effectiveness) measurement devices of various materials for various applications, fully utilizing our long practical experience in shielding effects of equipment and cables.

We will propose the most suitable system that fits your needs, according to characteristics of your sample and measurement conditions, please feel free to contact us!

【Related Contents】
👉 If you are engaged in designing Wave Absorption Materials or Noise Supression Sheet, please check link here.

For measuring shielding effect of sheet sample

Shield Effect Measurement System, Coaxial Tube Type (10.0kHz~18.0GHz) [SEM01] 

SEM01 complies with ASTM D4935, and is capable of measuring shield effect with plane wave with high accuracy.
Dynamic range over 100dB.
Available 153D、39D、20D and GPC7 coaxial type.
Data can be saved in Excel format, and reproduced graphically.

Shield Effect Measurement System, Waveguide Type(1.0GHz~90.0GHz) [SEM02]

SEM02 measures shield effect at wide ranges of 100dB between 1GHz~40GHz, and 70dB between 40GHz~90GHz.
The incidence angle of the plane wave to the sample changes as frequency changes,
allowing you to measure the correlation between the incidence angle and the shield effect.

For measuring shielding effect of cable


Shield Effect Measurement System for Cable [SEM03] 

SEM03 is a MIL-C-85485A compliant standard measurement method, effective in evaluating coaxial cable Correction by the value of characteristic impedance can also be performed.

Shield Effect Measurement System for Cables, Crosstalk Type [SEM04]

The system is based on the crosstalk method and can easily measure the shielding effect.
It can be used for both coaxial cables and multi-fiber cables.
The use of 10dB pads prevents mismatching due to differences in characteristic impedance.