A design procedure for classical offset inverse Cassegrain antennas with circular apertures

Author

Seunghyuk Chang ; Prata, A., Jr.

Author_Institution

Univ. of Southern California, Los Angeles, CA, USA

Volume

1

fYear

2001

Firstpage

534

Abstract

The classical offset inverse Cassegrain configuration is proposed as a reflector antenna geometry. Its sub and main reflectors are concave ellipsoid and convex paraboloid, respectively. This geometry is potentially capable of yielding a wide field of view while being efficiently illuminated by small feeds. An efficient design procedure was derived for them, and verified with two examples. The starting design parameters of the procedure are convenient since they can be easily related to basic system constraints. The scattering characteristics of the two examples validate the design procedure by indicating that all optimum geometry has been obtained.

Keywords

antenna radiation patterns; antenna theory; offset reflector antennas; circular apertures; classical offset inverse Cassegrain antennas; concave ellipsoid sub-reflector; convex paraboloid reflector; design procedure; reflector antenna; scattering characteristics; Antenna feeds; Aperture antennas; Geometrical optics; Geometry; Microwave antennas; Microwave radiometry; Optical design; Optical surface waves; Reflector antennas; Vision defects;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2001. IEEE

Conference_Location

Boston, MA, USA

Print_ISBN

0-7803-7070-8

Type

conf

DOI

10.1109/APS.2001.958908

Filename

958908