Generation of Rectangular Radiation Patterns by using a Pattern Synthesis Method

Abstract

The paper describes the design of an array antenna having a rectangular radiation pattern. The antenna can be applied to mobile communications in urban areas and to car-testing tracks having an oval shape. An elliptical pattern is set as the target pattern for developing the rectangular radiation pattern. The current distribution of the array was calculated by recursive computation using a modified Woodward-Lawson sampling method. The element spacing and the current distribution of arrays having 10-20 elements are given in this paper. To confirm the achievement of the desired antenna characteristics, prototype antennas fed by two different types of excitation were examined. The antennas produced a nearly rectangular radiation pattern.