Patent ID: 6362795
Filing Date: 2002-03-26
Classification: G01S,H01Q

Abstract:
An antenna apparatus comprising:a dielectric lens having a focal plane, the focal plane of the dielectric lens being outside the dielectric lens; and a primary radiator, the dielectric lens and primary radiator having a relative positional relationship, wherein the dielectric lens and the primary radiator are arranged so that the relative positional relationship of the primary radiator within the focal plane of the dielectric lens is changeable; and further wherein said primary radiator comprises a first dielectric line serving as an input/output section, a dielectric resonator coupled to the first dielectric line, and an opening section from which an electromagnetic wave is at least one of radiated and received in an axial direction, a second dielectric line being provided adjacent said first dielectric line to form a directional coupler having an amount of coupling, the relative positional relationship between said dielectric lens and said primary radiator being changed by varying the amount of coupling in a coupled section of the first and second dielectric lines.