Abstract: With the development of composite materials technology, the cost reduction of the radome raw materials and the low cost of the molding process are the direction for the design and production of the radome. In this paper, the raw materials of sandwich radome are optimized and tested. The sandwich radome was fabricated by solvent-free wet prepreg and vacuum bag pressing method. Through the electrical performance and environmental adaptabilitiy test, the radome meets the requirements of product design and use. The main material cost of the low-pressure molded sandwich radome for wet prepreg is greatly reduced. The cost of the radome fabricated by this way is more than 50% lower than that of traditional dry prepreg/PMI radome, which is more than 70% lower than that of the honeycomb sandwich radome. It can be widely used in the production of radomes on the ground radars.

Key words: sandwich radome, wet prepreg, dry prepreg, low cost, composites