High-frequency RCS of open cavities with rectangular and circular cross sections

Author

Ling, Hao ; Lee, Shung Wu ; Chou, Ri Chee

Author_Institution

Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA

Volume

37

Issue

5

fYear

1989

fDate

5/1/1989 12:00:00 AM

Firstpage

648

Lastpage

654

Abstract

The radar cross-section (RCS) analysis of open-ended cavities with rectangular and circular cross sections is carried out using the waveguide modal approach and the shooting-and-bouncing ray (SBR) approach. For a cavity opening on the order of ten wavelengths or larger, the comparison between the two approaches is excellent. It is also observed that at lower frequencies the SBR results deviate from the more accurate modal results. On the other hand, the SBR approach allows for greater flexibility in geometrical modeling, and can be applied to problems where waveguide modes cannot be easily found. SBR results for an offset rectangular cavity and a circular cavity with rounded endplate are presented

Keywords

backscatter; electromagnetic wave scattering; radar cross-sections; EM scattering; backscattering; circular cavity; circular cross sections; high frequency RCS; offset rectangular cavity; open-ended cavities; radar cross-section; rectangular cross sections; rounded endplate; shooting and bouncing ray approach; waveguide modal approach; Apertures; Frequency; Helium; Optical scattering; Optical waveguides; Planar waveguides; Radar cross section; Radar scattering; Rectangular waveguides; Solid modeling;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.24193

Filename

24193