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EMC - TEMPEST - HEMP

At Exxelia, we specialize in providing cutting-edge solutions for Electromagnetic Compatibility (EMC), TEMPEST, and HEMP protection, ensuring the integrity and reliability of your critical electronic systems in even the most demanding environments. 



Our EMC solutions are designed to mitigate electromagnetic interference (EMI) and ensure compliance with stringent regulatory standards. From innovative filtering technologies to custom shielding solutions, we offer a comprehensive range of products and services tailored to your specific requirements. 



In the realm of TEMPEST protection, Exxelia excels in safeguarding sensitive information from electromagnetic emanations. Our TEMPEST-certified products are engineered to prevent unauthorized access to classified data by mitigating the risks posed by compromising emanations.

Frequently Asked Questions

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What is insertion loss in EMC filters?

Antiparasitic filters generally operate by impedance mismatch within a given frequency range.


The insertion loss of a filter in a supply or transmission circuit is defined as the ratio between the voltage values occuring at the line terminal leads immediately after the insertion point, before and after insertion.


Different standards specify the attenuation measurement possibilities in asymmetric (common mode) or symmetric (differential mode)
attenuation, measurements performed on load or no-load circuits.


The following standards are applicable :

  • Standard GAM T 21
  • Standard MIL STD 220 C
  • Standard CISPR


The insertion loss performance is specified, measured according to the standard GAM T 21 or MIL STD 220 C in no-load conditions under an impedance of 50. 

This measurement enables to check the compliance of the manufactured batch and to compare certain filters.
The real efficiency of a filter on an equipment can only be obtained by disturbance measurement taking into account the source and operating impedance.


For signal or data transmission filters usually defined in matched impedances, attenuation in the pass-band is measured according to the standard MIL 18327 E.

What are the different types of filters and EMC protections available, and how do they work?

As well as the products given, Exxelia proposes a wide range of filtes and EMC protections for applications such as :

  • High power
  • Ancillary circuits and small signals
  • Tempest
  • NEMP-HA

Still have questions ?

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