A study on parallel-arranged leaky wave antenna with dielectric superstrate

In this report, a parallel-arranged leaky wave antenna with dielectric superstrate is proposed. The proposed antenna consists of a ground plane, a substrate layer, and a superstrate layer. Half of the substrate layer is filled with dielectric, and the other half is filled with air to create a quasi-cutoff region. We parallelly arranged three types of elements with different effective relative permittivity in substrate layer along the E-plane direction. Each element has a different beam direction, and by changing the feeding port, the beam direction can be controlled. The influence of parallel LWADS configuration on the radiation pattern was examined, and its suitability as a beam switching antenna was studied.