Abstract
A broadband technique to reduce the radar cross section (RCS) of complex targets is presented. In such targets, multiple-bounce mechanism dominates their RCS. The proposed technique demonstrates that by treating the multiple-bounce mechanism as a cascaded phenomenon, the problem then 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 quadruple-bounce mechanism, is considered. Generalized guidelines are summarized and applied to reduce the RCS of complex targets using the proposed method.
| Original language | English (US) |
|---|---|
| Article number | 8910548 |
| Pages (from-to) | 1436-1447 |
| Number of pages | 12 |
| Journal | IEEE Transactions on Antennas and Propagation |
| Volume | 68 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 2020 |
Keywords
- Array theory
- RCS reduction
- artificial magnetic conductor (AMC)
- checkerboard metasurface
- complex targets
- dihedral corners
- high-frequency asymptotic methods
- metasurfaces
- orthogonality principles
- phase-gradient metasurface
- physical optics (PO)
- radar cross section (RCS)
- scattering cancellation
ASJC Scopus subject areas
- Electrical and Electronic Engineering