Title :
Thinning of aperiodic antenna arrays for low side-lobe levels and broadband operation using genetic algorithms
Author :
Spence, T.G. ; Werner, D.H.
Author_Institution :
Dept. of Electr. Eng., Pennsylvania State Univ., University Park, PA
Abstract :
In this paper we present and discuss the thinning of antenna arrays that are based on aperiodic tilings. Aperiodic tilings are a class of tilings that cover the plane without gaps or overlaps and do not exhibit any long-range translational symmetry. By utilizing these tilings in array design it is possible to generate naturally thinned arrays that exhibit broadband properties. We show that by using a genetic algorithm (GA) it is possible to further thin such aperiodic arrays in order to minimize the side-lobe levels (SLL) while simultaneously enhancing the desirable broadband properties. The technique is demonstrated by considering the design of a specific thinned aperiodic array and comparing its performance to a thinned periodic array
Keywords :
antenna arrays; broadband antennas; genetic algorithms; aperiodic antenna arrays; aperiodic tilings; array design; broadband operation; genetic algorithms; low side-lobe levels; naturally thinned arrays; thinned periodic array; Antenna arrays; Apertures; Bandwidth; Broadband antennas; Genetic algorithms; Gratings; Laboratories; Planar arrays; Process design; Tiles;
Conference_Titel :
Antennas and Propagation Society International Symposium 2006, IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
1-4244-0123-2
DOI :
10.1109/APS.2006.1710986