Metasurface-Based Method for Broadband RCS Reduction of Dihedral Corner Reflectors with Multiple Bounces

Anuj Y. Modi, Meshaal A. Alyahya, Constantine A. Balanis, Craig R. Birtcher

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

A broadband technique to reduce the Radar Cross-Section (RCS) of complex targets is presented. In such targets, multiple-bounces mechanism dominates their RCS. Since the multiple-bounces mechanism is a cascaded phenomenon, it is demonstrated by using the proposed technique the problem of reducing the RCS contribution from such multiple-bounces simplifies to identifying and implementing a set of orthogonal functions. Robust guidelines for avoiding grating lobes are provided using array theory. The 90° dihedral corner is used to verify the proposed technique. Measurements are reported for a fabricated prototype with artificial magnetic conductor (AMC) technology where a 70% RCS-reduction bandwidth is observed. To generalize the method, a 45° dihedral corner, with quadruplebounce mechanism is considered. Generalized guidelines are summarized and applied to reduce the RCS of complex targets using the proposed method.

Original languageEnglish (US)
JournalIEEE Transactions on Antennas and Propagation
DOIs
StateAccepted/In press - Jan 1 2019
Externally publishedYes

Keywords

  • Array Theory
  • Artificial Magnetic Conductor
  • Checkerboard Metasurface
  • Complex targets
  • Dihedral corners
  • High-frequency asymptotic methods
  • Metasurfaces
  • Orthogonality principles
  • Phase-Gradient Metasurface
  • Physical optics
  • Radar Cross-Section
  • RCS reduction
  • Scattering cancellation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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