1115 Beam steerable leaky wave antenna for millimeter wave applications

Abstract

This paper presents a directivity reconfigurable antenna for millimeter-wave communication. Reconfiguration is carried out by changing the dielectric constant of ferroelectric film. The ferroelectric film is composed of lanthanum modified lead titanate (PLT) and deposited on micro strip line by RF sputtering. The dielectric constant of PLT has temperature dependence, so by using heater elements we can change the dielectric constant of PLT film. Heater elements are laid out beside micro strip line. By switching heater element the dielectric constant is periodically changed, and the characteristic of antenna will be reconfigured. As a first step, we analyzed two kind of antenna device by using FDTD (Finite Difference Time Domain) method, and fabricated them. And we developed a new numerical analysis program using CIP (Cubic Interpolated Peudo-Particle Scheme) method.