Perfect absorbing metamaterial based on model of metallic dendritic cell is fabricated. A S-wave band microstrip antenna with perfect absorbing metamaterial substrate is proposed. The results show that compared to the conventional microstrip antenna, the performance of the novel microstrip antenna with perfect absorbing metamaterial substrate has improved remarkably. The direction of the antenna is enhanced, the gain is improved by 1.8dB and its efficiency is increased by 51％. It is proved that the performance of the microstrip antenna is improved by using perfect absorbing metamaterial as its substrate.%设计了基于树枝状结构单元模型的完全吸波超材料,并将此树枝状结构完全吸波超材料作为微带天线的基板,制备了S波段超材料完全吸收基板微带天线,模拟和实验结果表明,窄带和宽带完全吸波超材料都可提高微带天线的定向性和增益,性能得到了明显改善.经过优化设计S波段超材料完全吸收基板微带天线的增益相比普通微带天线提高了1.8 dB,相当于有效辐射功率提高了51%.表明将完全吸波超材料作为天线的基板,可以明显改善天线性能.
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