Control of electromagnetic scattering by antenna impedance loading
Abstract
The application of impedance loading techniques for the reduction of backscatter from radar targets were studied. The hybrid methods which combine the GTD and the moment method were used to analyze the backscattering from various geometries such as impedance loaded infinite wedge and a two-dimensional wing model. The effect of both the trailing and the leading edge was considered by using a two-dimensional wing model. The edge diffraction source can be considerably reduced over a 3:1 frequency band for the two-dimensional case. The square plate with a loaded slot was analyzed by a wire grid model. The backscatter reduction of the square plate can be achieved at least over a 2:1 frequency band.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- July 1974
- Bibcode:
- 1974STIN...7526211L
- Keywords:
-
- Backscattering;
- Electrical Impedance;
- Electromagnetic Scattering;
- Radar Antennas;
- Electronic Countermeasures;
- Load Distribution (Forces);
- Numerical Analysis;
- Radar Cross Sections;
- Radar Targets;
- Two Dimensional Models;
- Communications and Radar