Ultra-wideband bi-static RCS reduction with full angular stability using diffraction periodic symmetrical structures

Alireza Oruji, Ali Pesarakloo and Mohammad Khalaj-Amirhosseini

Journal of Electromagnetic Waves and Applications, 2022, vol. 36, issue 17, 2450-2462

Abstract: In this paper, a planar, two-layer, and symmetrical structure is presented to obtain ultra-wideband bi-static RCS reduction with angular stability in azimuth and elevation directions. The proposed structure is composed of two layers. The bottom layer contains a periodic surface with periodicity larger than one wavelength to scatter multiple Floquet harmonic and thus bi-static RCS reduction. To achieve angular stability for the azimuth direction, the geometry of the unit cell is optimized with symmetry to its center. The top layer contains a substrate with high relative permittivity, which, according to refraction Snell’s law, increases the bandwidth of RCS reduction and contributes to angular stability regarding the elevation direction. The results show the RCS reduction by 10 dB over a wide frequency range from 4.2 GHz to 22.9 GHz (137%) at the normal incidence, and more than 80% for oblique incident waves within the $ 50^\circ $ 50∘ elevation angle range.

Date: 2022
References: Add references at CitEc
Citations:

Downloads: (external link)
http://hdl.handle.net/10.1080/09205071.2022.2088408 (text/html)
Access to full text is restricted to subscribers.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:taf:tewaxx:v:36:y:2022:i:17:p:2450-2462

Ordering information: This journal article can be ordered from
http://www.tandfonline.com/pricing/journal/tewa20

DOI: 10.1080/09205071.2022.2088408

Access Statistics for this article

Journal of Electromagnetic Waves and Applications is currently edited by Mohamad Abou El-Nasr and Pankaj Kumar Choudhury

More articles in Journal of Electromagnetic Waves and Applications from Taylor & Francis Journals
Bibliographic data for series maintained by Chris Longhurst ().