Title :
Reflector antennas with superquadric aperture boundaries
Author :
Duan, D.W. ; Rahmat-Samii, Y.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
fDate :
8/1/1993 12:00:00 AM
Abstract :
A unified treatment for reflector antennas with elliptical (circular) or rounded-rectangular (rounded-square) aperture boundaries utilizing superquadric functions is presented. Reflector antennas with superquadric aperture boundaries possess unique properties. To reveal these properties and properly implement them in diffraction analysis formulation, important geometrical features of the superquadric aperture, including a closed-form expression for the area, are presented. Parametric representations of the superquadric aperture are investigated, and a superior parameterization is introduced for evaluating the diffraction integrals. Representative results of physical optics (PO) analysis for superquadric reflector antennas are presented, and key features of the radiation pattern characteristics are summarized. Although the focus of this work is on reflector antennas, the main feature of superquadric aperture characteristics and its parametric representations are generally applicable to any aperture type antennas
Keywords :
antenna radiation patterns; antenna theory; physical optics; reflector antennas; closed-form expression; diffraction analysis; diffraction integrals; elliptical aperture boundaries; parametric representations; physical optics; radiation pattern characteristics; reflector antennas; rounded-rectangular aperture boundaries; superquadric aperture boundaries; unified treatment; Antenna radiation patterns; Aperture antennas; Closed-form solution; Optical diffraction; Pattern analysis; Physical optics; Radar antennas; Receiving antennas; Reflector antennas; Structural beams;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
