Technologies > Immunity > RF Immunity
Amber Precision Instruments is a research-oriented EMC solution provider
Immunity/RF Immunity > Principles
This scanning technology is mainly to identify the sensitivity of a product to external or internal RF fields (for example, a cell phone disturbs a display), and the cause of the coupling. The scanning variables can be scan frequency, the modulation in the RF, the probe (electrical field or magnetic field, size and orientation), etc.
An RF signal or a modulated RF signal is fed into a probe. The probe is moving around the product while the product is observed for signs of disturbances. The strength of the disturbance is automatically recorded for each location. A map of the local sensitivity of the product is created, helping to understand the reason for the immunity problem.
It is very similar to ESD scan, but user controls power level and frequencies, unlike ESD, which is a broadband disturbance.
Immunity/RF Immunity > Applications
● Sensitivity analysis of a product to external or internal RF fields.
● Debugging for IEC 61000-4-3 failures or TEM cell tests
Immunity/RF Immunity > Required Equipment
● Signal generator
● Power amplifier
The frequency range depends on the user's requirement, and 5 ~ 10 Watt output power level is usually enough.