Dielectric leaky wave antenna

摘要

An antenna comprising a conductive cavity, one boundary of which comprises a reactive element comprising an array of conductors disposed on a dielectric surface such that the displacement between a conductor and any other conductor adjacent to it is small compared to the wavelength of the electromagnetic radiation to be transmitted by the antenna thereby causing the array of conductors to represent an effectively continuous conductive surface to the electromagnetic radiation, the reactive element being adapted to present a capacitive surface impedance; and an emitter (10) disposed within the cavity for emitting the electromagnetic radiation.