The electromagnetic simulation can be used to design the macroscopic absorbing structure of the microwave absorbing material. Research indicates that the macrostructure can adjust the impedance matching and electromagnetic properties of the materials, thereby improving the absorption performance. Among them, the honeycomb structure is often used in actual products due to its good absorption characteristics and mechanical properties. Therefore, in this work, the absorption performance of the carbon microsphere material was improved through the honeycomb structure design. The carbon microsphere material is firstly prepared by sintering phenolic resin, which has the advantages of convenient synthesis, high yield, and a narrow absorption bandwidth of 4.4 GHz. Then, through the high frequency structure simulator (HFSS) electromagnetic simulation, the honeycomb structure based on the carbon microspheres was macroscopically designed, achieving a larger 8.3 GHz absorption frequency bandwidth. This research completed the combination of electromagnetic simulation and honeycomb structure, improved the absorption bandwidth of carbon microspheres, and opened up a new way for the further improvement and practical application for traditional absorption materials.

电磁仿真可用于设计微波吸收材料的宏观吸收结构。研究表明，宏观结构可以调节材料的阻抗匹配和电磁性能，从而提高吸收性能。其中，蜂窝结构由于其良好的吸收特性和机械性能而经常用于实际产品中。因此，在这项工作中，通过蜂窝结构设计提高了碳微球材料的吸收性能。碳微球材料首先是通过酚醛树脂的烧结制备的，具有合成方便，产率高，吸收带宽4.4GHz的优点。然后，通过高频结构仿真器（HFSS）进行电磁仿真，宏观设计了基于碳微球的蜂窝结构，实现了更大的8.3 GHz吸收频率带宽。本研究完成了电磁模拟与蜂窝结构的结合，提高了碳微球的吸收带宽，为进一步改进和实际应用传统吸收材料开辟了一条新途径。