Improvement on RCS reduction using flat lossy focusing reflectors

Cheng Yuan Chin, Christina Jou

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

In this paper, we propose a planar non-periodic subwavelength resistive grating (SWRG). The phase front of the scattered fields can be completely manipulated through non-periodic design of the grating while high absorptivity is preserved. The SWRG has an interesting property similar to a resistive concave reflecting lens. Scattered wave is focused in the near-field region, and spread out in the far-field. This feature of non-periodic resistive grating can improve the original radar cross section (RCS) reduction up to 22.86 dB in the boresight direction comparing to the periodic counterpart. Non-periodic design of SWRG could have a substantial impact on stealth technology, aerospace engineering, and microwave anechoic chamber. (C) 2013 Optical Society of America
Original languageEnglish
Pages (from-to)32534-32548
Number of pages15
JournalOptics Express
Volume21
Issue number26
DOIs
StatePublished - 30 Dec 2013

Keywords

  • RESISTIVE STRIP GRATINGS; COUPLED-WAVE ANALYSIS; SALISBURY SCREEN; SCATTERING; ABSORBER; DESIGN; DIFFRACTION; SURFACES; SHEETS; EDGE

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