Electromagnetic Compatibility (EMC) is a crucial factor in embedded product development. EMC measures how well electrical devices can function without performance degradation when exposed to EMI (electromagnetic interference, or energy released from other electrical devices) and ensures that device radiation does not affect the operation of other devices. While EMI is the problem, EMC assesses how effectively that problem can be managed.

Typically, the first time system designers realize they have a radiated emission problem is after the prototype system has been built and evaluated. In such situations, costly and ineffective patches are often applied, often necessitating a redesign. Electronics hardware and firmware coexist, and depending on factors such as time-to-market, cost, and resources, one must choose the best possible solution to address EMC issues.

In this talk, we will highlight methods a firmware developer can follow to achieve good electromagnetic compatibility.