Antenna array design for low earth observation satellites

Abstract

A rectangular planar array antenna design using thinning technique and Genetic Algorithm (GA) optimization technique are used to minimize the gain variation for Low Earth Orbit (LEO) satellites antenna. This design controls the feeding amplitude through thinning without requirements to control the phases which yields to simplify the feeding network. Two antenna elements are proposed, cos 1.5 radiation pattern element and the rectangular patch element. A simple genetic algorithm optimizer is used to get the optimum excited elements on the array.