Dual-layer substrate integrated broadside leaky-wave antenna

Abstract

A dual layer, dual reflector leaky wave antenna for broadside radiation is presented. The antenna has compact size since one layer is dedicated for reflector feeds and the other layer for leaky slot array. The tapered leaky slots are fed by out-of-phase waves coming from reflectors travelling in opposite directions so that the broadside radiation patterns are achieved with over 20% frequency band without beam scanning.