Directional radiation pattern of surface wave antenna using dogbone structure

Abstract

A low-profile antenna with an array of dogbone-shaped elements is presented. The proposed structure is a surface wave antenna on which a 2-by-2 dogbone array is installed. As a result, main beams directed to the reverse each other are parallel to the longest part of the dogbone elements, and shows a narrow beam width. The radiation pattern has been changed from the omni-directional pattern of a conventional surface wave antenna with a 2-by-2 square patch array.