Abstract: Klein tunneling effect is observed in graphene. It is widely investigated because of its special optical and electrical properties. The multi- barrier structure with the same height is designed to andalyze the tunneling effect. Using the Bloch theorem,the carrier energy band with periodic barrier structure is obtained. The resonant tunneling area can be analyzed from the energy spectrum. The numerical results indicated that the required tunneling probability can be tuned by the width and the height of the barriers and wells,and the incident energy. The conductance properties can be further investigated.

Key words: Bloch theorem, graphene, tunneling effect