Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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Design of Transparent Electromagnetic Absorbing Structure for Stealth Aircraft Canopy

스텔스 전투기 캐노피를 위한 투명 전자파 흡수구조 설계

  • Hong, Ic-Pyo (Department of Information & Communication Engineering, Kongju National University)
  • 홍익표 (국립공주대학교 정보통신공학부)
  • Received : 2015.01.06
  • Accepted : 2015.07.03
  • Published : 2015.08.05
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Abstract

In this paper, transparent circuit analog radar absorbing structure with angular stability for stealth aircraft canopy was proposed and designed. To obtain wideband electromagnetic absorption, optical transparency and smaller thickness, we proposed the novel FSS(Frequency Selective Surface) for X-band and implemented the resistive FSS and PEC(Perfect Electric Conductor) plane using ITO(Indium Thin Oxide) coating with optical transmissivity of 90 %. Reflection loss characteristics for different incident angles of both TE(Transverse Electric) and TM(Transverse Magnetic) polarizations are presented through simulations. We then fabricated the proposed structure to verify the simulation results. The comparisons between the simulation and measured results show good agreements. The results also show that the proposed radar absorbing structure can provide better frequency stability for different incidence angles and polarizations as well as optical transparency. We can apply this proposed structure to the canopy of stealth aircraft and other stealth applications for visible transparency.

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References

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