基于复合材料夹芯结构的辐射/承载一体化天线设计与表征OA

The traditional antenna installed on the aircraft will increase the radar cross-sectional area of the aircraft and affect the aerodynamic performance,which will seriously affect the performance of the aircraft.Therefore,the integrated design of the antenna and the aircraft structure is one of the development trends of the future airborne antenna.In this paper,a radiation/load-bearing integrated antenna design scheme is proposed by combining the glass fiber composite(FR-4)grid structure with the microstrip antenna.The grid sandwich antenna and the foam-filled grid antenna are designed.The radiation performance of the two antenna structures is characterized by electromagnetic simulation and test.The working frequency band is between 12.65～12.85GHz,and the peak gain is greater than 10dBi.The out-of-plane compression test results show that the load-bearing characteristics and energy absorption characteristics of the original structure can be effectively improved by filling the foam in the grid sandwich antenna.The proposed integrated antenna structure effectively improves the structural efficiency,and can replace the existing sandwich structure in the aircraft in engineering applications,further expanding the application space of the integrated structure.