Dielectric Characterization of Polymer Composite Materials for Antenna Radome Applications

Radomes can protect antennas from environmental circumstances with minimized electromagnetic attenuation.Radomes should have suitable dielectric and loss tangent coefficients as well as good enough mechanical specifications.In this work, suitable polymer composite materials are considered to apply in antenna radomes. The proposed specimensare made of the mat, woven E-glass fibers, and four kinds of resin such as vinyl ester resins, epoxy ml۵۰۶, epoxy ly۵۰۵۲,and ker۸۲۸, respectively. These samples are prepared for dielectric permittivity measurement from ۸ to ۱۲ GHz. Theresults prove that mat fibers and vinyl ester resin achieve the best dielectric properties at RF frequencies. Also, finiteelement analysis results depict that these composite materials can be used to protect antennas with a high safety factor,also.