Development of LC EMI filter arrays for 4G-LTE applications

In this investigation, a 4 channel EMI filter array for 4G-LTE application is proposed with multilayer structure and formed by low-temperature co-fired technique. In order to miniaturize the size of the component and improve its performance, a mixed powder material is employed to design and fabricated the filter. The overall dimension of EMI filter array is 1.6 mm (L) × 0.8 mm (W) × 0.5 mm (H), the smallest one reported so far. The measured results of the developed filter are in a good agreement with the simulated results by full-wave electromagnetic simulator.