Research progress and development suggestions on aeronautical electromagnetic metamaterial

Abstract

Electromagnetic metamaterial is an artificial composite composed of periodic subwavelength microstructure，which has a strong conduction regulation or absorption effect on electromagnetic wave，and it has been widely studied in the field of stealth design of aviation weapons and equipment. In this paper，the concept of electromagnetic metamaterial is introduced firstly，and the latest research progresses of electromagnetic control metamaterial，electromagnetic absorbing metamaterial，active tunable metamaterial and intelligent metamaterial are reviewed. Then，the stealth mechanism and the application research status of electromagnetic deflection metamaterial，electromagnetic absorbing metamaterial and frequency selective metamaterial are introduced. It is analyzed that the rich stealth mechanism and the strong designability are the main advantages of electromagnetic metamaterials as distinct from the traditional absorbing materials. For the development of electromagnetic metamaterial，this paper puts forward three suggestions from expanding the absorbing spectrum，enhancing the absorbing performance，and smart tunable of absorbing ability，specifically including the expansion of absorbing spectrum to infrared，laser and ultraviolet band，further improving the broadband absorbing ability，and intelligent adjusting the absorbing frequency band.

Keywords

• electromagnetic metamaterial
• stealth
• electromagnetic deflection
• electromagnetic wave absorbing
• frequency selection