三维电磁带隙结构天线基板3D打印制造及性能研究

Study on 3D-printing Manufacturing and Performance of 3D EBG Antenna Substrates

为了提升天线的增益和方向性,该文研究了EBG(电磁带隙结构)基板及其宏观结构变化对偶极子天线的性能的影响。采用光固化3D打印技术与凝胶注模工艺相结合,制备不同宏观结构的EBG基板并测试其对偶极子天线性能的影响,实验结果表明,相比于无凹槽的EBG基板,有凹槽的EBG基板性能更优;当凹槽被3个周期包围时,效果最好,天线的增益提高了1 dB。研究表明,EBG基板宏观结构变化能够提高天线的增益和改善方向性,为工程应用提供了借鉴。

In order to improve the gain and directivity of the antenna, the effects of the EBG substrate and its macro-structure changes on the performance of the dipole antenna has been studied in this paper. The UV curing3 D printing technology and gel casting process were combined to prepare EBG substrates with different macroscopical structure and their effects on dipole antenna performance were tested. The experimental results showed that the performance of substrates with grooves was better than that without grooves. When the groove was surrounded by three cycles, the effect was the best,the antenna’s gain has been increased by 1 dB. The research demonstrated that the macro-structure change of an EBG substrate could improve the gain and directivity of an antenna, which provided reference for engineering application.