RF CDNs
RF coupling decoupling networks (also called RF CDNs) are CDNs that allow for the transfer of RF waves between auxilliary equipment and the DUT/EUT during RF immunity testing. RF CDNs are most commonly used for standards such as IEC 61000-4-6, IEC 61000-4-16, IEC 61000 4-19, DO-160 Section 20, and MIL-STD-461G CS114. These devices are the prefered injection method for both conducted RF testing and conducted RF immunity testing.
There are four variants designed for conducted disturbance immunity testing, which go as follows:
There are four variants designed for conducted disturbance immunity testing, which go as follows:
- M type - Meant for products using power supply lines.
- AF type - Meant for products using unscreened, unbalanced cables/lines with two, four, and eight conductors carrying low currents.
- S type - Meant for products using lines such as shielded/screened lines and coaxial cables.
- T type - Meant for products using lines such as unscreened lines, balanced lines, and unshielded twisted pairs for Telecommunication.