A Design Based On The Novel FSS Of Airborne Sandwich Radome

Radome is a sophisticated device which combines with good heat and corrosion patience, moreover it has other special indicators such as high structural strength, good dielectric properties and high transmission efficiency. The one loaded frequency selective surface has stealth characteristic and can not only achieve high transmission efficiency, reduce the radar cross section, also can determine electromagnetic wave with different frequencies in or not. Therefore, it has a broad prospect in the aviation, aerospace and other fields.In this paper, the radome with frequency selective surface loading is studied and simulated, and for which the structures and the results are analyzed, details are as follows:A Miniaturized-element Frequency Selective Surface(MEFSS) is proposed based on the coupling mechanism between a capacitive surface and an inductive surface. This MEFSS is overcoming the shortcomings that the traditional unit cell is too long, the substrate is too thick, and the unit cell is not limited by wavelength. By using the full-wave simulation software, the transmission characteristics are analyzed by simulating different geometry parameters. It state that the MEFSS has a good characteristics on wide pass-band, the stability of incident angle and polarization.The transmission characteristics of the different loading elements are summarized based on the lumped elements loading among MEFSS units. It concludes that:the size of FSS unit can be further miniaturized by the approach to load lumped capacitor and controlling of the pass band can be achieved.Depending on the application, the MEFSS applied to single, A and C sandwich radome. The simulation results reveal that several add-on MEFSS sandwich radome have optimum thickness and has small loss of in-band transmission with fiat-peak characteristics.By building a plane wave-radome simulation test system and raising a method for field analysis. A finite planar and cylindrical FSS radome is full-wave simulated and compared with the infinite simulation results. The conclusion prove:it is feasible and has some practical significance.