Site Voltage Standing wave ratio Requirements as per CISPR 16-1-4 (sVSWR)
Site Voltage Standing wave ratio Requirements as per CISPR 16-1-4 (sVSWR) Introduction Site Voltage Standing Wave Ratio (sVSWR) is a critical parameter used to validate the uniformity of the electromagnetic field in semi-anechoic chambers (SACs). As per CISPR 16-1-4, EMI test sites for radiated emission measurements in the 1 GHz to 18 GHz require site […]
Normalized Site Attenuation (NSA) as per CISPR 16-1-4
Normalized Site Attenuation (NSA) as per CISPR 16-1-4 Introduction In electromagnetic compatibility (EMC) testing, accuracy and repeatability are critical. One of the most essential steps in ensuring valid radiated emissions measurements is to verify the performance of the test environment itself. Normalized Site Attenuation (NSA) is a key metric used to evaluate whether an EMC […]
Shielding Effectiveness
Shielding Effectiveness What is Shielding Effectiveness? Shielding Effectiveness (SE) is an essential aspect of EMC chambers, as it guarantees that the chamber fulfils its main purpose efficiently. SE quantifies how well a material or enclosure, such as a chamber, can obstruct electromagnetic fields (EMF). This measurement is usually expressed in decibels (dB), representing the ratio of […]