RETRACTED: Durable Superhydrophobic Coatings Based on Silica Nanoparticles for 5G Radome

5G antennas typically operate in outdoor environments. These outdoor factors can reduce antenna accuracy, shorten life, and cause poor operational reliability. Therefore, applying materials with water-repellent properties to the radome can play an important role in protecting them from external environments. This paper reports a superhydrophobic nanocoating that can be sprayed on the radome. The dielectric constant of the coating is 2.709, and the dielectric strength is 38.58 kV/mm. The radome with a superhydrophobic coating was tested by rain, and its signal transmission is only −0.24 dB. Meanwhile, the static contact angle of the coating can reach 157°.