Patent ID: 7999737
Filing Date: 2011-08-16
Classification: H01P,H01Q

Abstract:
1. Device for adjusting the beam direction of a beam radiated from a stationary array of antenna elements, wherein at least two antenna element feed points are coupled to a common signal source via a planar feed line structure having a source connection terminal to be connected to said source and at least two feed connection terminals to be connected to said antenna element feed points, said feed line structure being elongated in a main direction at a distance from and in parallel to a fixed ground plane on both sides of said feed line structure, wherein a movable dielectric element is located between said feed line structure and at least one ground plane so as to change the signal phase of signal components being transferred between said source connection terminal and the respective feed connection terminals, said dielectric element being movable in said main direction for effecting a controlled phase shift of said signal components so as to adjust said beam direction, wherein a non-conductive film or layer is positioned between said feed line structure and each ground plane, wherein the dimension of the non-conducting film or layer substantially corresponds to the dimension of the ground plane.