Patent ID: 7786945

Claim:
A beam waveguide, comprising: a first set of dual offset reflectors; a second set of dual offset reflectors, wherein the first set of dual offset reflectors and the second set of dual offset reflectors each include reflector geometries to produce a radiation pattern that is symmetric about a first axis between the first and second set of dual offset reflectors and to produce an axi-symmetric beam from the second set of dual offset reflectors that is unaffected by any rotation of the first and second set of dual offset reflectors relative to one another about the first axis; a waveguide structure containing the first and second set of dual offset reflectors; a first reflector to transmit or receive a beam along a second axis from the second set of dual offset reflectors, wherein the first flat reflector is rotatable relative to the second set of dual offset reflectors about the second axis; a second reflector to transmit or receive the beam from the first reflector along a third axis and wherein the second reflector is rotatable relative to the first reflector about a third axis; a first gimbal associated with the first axis for rotating the second set of dual offset reflectors to any angle relative to the first set of dual offset reflectors; a second gimbal associated with the second axis for rotating the first reflector to any angle relative to the second set of dual offset reflectors; and a third gimbal associated with the third axis to rotate the second reflector to any angle relative to the first reflector, the first gimbal, the second gimbal and the third gimbal being able to rotate the associated reflectors to any angle about the first axis, the second axis and the third axis to prevent any keyhole condition and to avoid any interference with the waveguide structure.