Keywords: 
• 左手材料 /
• 双频带 /
• 多开口

Abstract: This paper presents a novel dual-band magnetic resonance with multi-defect hexagonal structure. Staggered defects double hexagonal metal rings was put on a microwave substrate. So the coupling capacity of the two rings was damaged. Then the dual-band magnetic resonance has been obtained. The traditional structure of dual-band is very complicated. But the new structure is simple and the size is also very easy to control. Finally, we combined the novel structure with metal wires to make dual-band left-handed metamaterials. From the result of the HFSS simulation, this left-handed metamaterials has obtained dual-band at 6.5-7.0 GHz and 8.8-9.3 GHz. The dual-band left-handed structure has a great influence on the microwave filter, antenna, and other microwave devices.