In modern electronic devices, increase of switching performances and integration design with new techniques and material make the compliances with the internal and external radiated behavior more and more critical. This paper present a synthetic state of challenging works to deal with this constraint. Different techniques and prototypes have been studied and developed to integrate electromagnetic sensors and probes in hybrid technology circuits. A good realistic and real-time evaluation of electromagnetic activity of these circuits should help for EMC background and designing, but also should be convenient to optimize the electromagnetic behavior during the real activity of the electronics.