| Magnetic granular nano-films with good magnetic properties were applied in many fields such as magnetic header, RAM and RFIC L component etc. Above granular film's conduction percolation threshold, people concentrated on how to improve resistivity of soft magnetic granular films; under percolation threshold, DC conduction was modeled as hopping conduction and AC conduction had been manifested following"Universal dielectric response". So, there were two problems we must go ahead for, one is to improve the resistivity of soft magnetic granular film; the other is to investigate granular films' dielectric properties and impedance matching.Along Vainas's idea, granular film's dielectric response comes from microscope RC connection microstructure, at this point, materials' dielectric response can be characterized by RC network. According to hopping conduction model, we constructed random RC network to calculate granular films' dielectric response. For disorder in random RC model leading RC value to vary over several decades, it's not straight to explain the calculation results. So we calculated fixed value RC networks with random components position together with random RC networks to simulation how metal content affects dielectric response of granular film. The Calculation results of two kind network accords well with experiment results in papers published. Simulation results showed that there were generally two kind responses with metal concentration increasing, 1) Debye response at high metal concentration, 2) amorphous response at low metal concentration. At the same time, the conduction response can also be divided into two kinds, circle type and line type. Metal concentration areas according to different conduction responses, however, didn't overlap with the metal content areas corresponding to different dielectric responses.The simulation results can also be used directly as reference in granular films'dielectric properties investigation and impedance matching design.
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