Radiated EMI diagnosis and noise modeling for cellular phone

In this paper radiated EMI diagnosis and noise modeling for cellular phone is proposed. With this method, the radiated EMI noise mechanism models of the cellular phone are introduced, and changing tendency of the wave impedance with the distance is described to diagnosis the radiated EMI noise type of the cellular phone. It is shown from the experiments that the proposed method is a fast and efficient tool for radiated EMI diagnosis and modeling of cellular phone.