"FM capture effect" article has been uploaded to the RF Design Guide page

In our articles, we have touched on various RF phenomena such as the near-far problem.

One phenomenon we have not yet discussed is the "FM capture effect". Engineers who have used FM equipment such as wireless FM microphones or listened to FM broadcasts would have noticed how FM reacts differently to AM when it comes to co-channel interference.

In AM, both signals mix and can be heard. However in FM, the receiver will typically "lock" onto the signal that is strongest while the other signal is suppressed. The following article explains the "FM capture effect", why it occurs and how it would apply to Circuit Design's wireless audio modules, the WA-TX-03S and WA-RX-03S.