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Input impedance and radiation pattern of a resonant dipole embedded in a two-dimensional periodic leaky-wave structure
, Article IET Microwaves, Antennas and Propagation ; Volume 9, Issue 14 , 2015 , Pages 1567-1573 ; 17518725 (ISSN) ; Borji, A ; Sharif University of Technology
Institution of Engineering and Technology
2015
Abstract
Array scanning method (ASM) is employed to study the input impedance and radiation pattern of a two-dimensional periodic leaky-wave antenna (LWA). The antenna consists of a narrow horizontal strip dipole of arbitrary length underneath a two-dimensional (2D) periodic screen of metallic patches, which acts as a partially reflective surface (PRS), and backed by a ground plane. First, the Green's function in the presence of the 2D array of metallic patches is calculated by means of the ASM and then the current distribution and input impedance of the source dipole are calculated through the electric field integral equation and method of moments. The far-field pattern is computed using the...