Reconfigurable multiple beam satellite phased array antenna

A reconfigurable multiple beam phased array antenna comprising:

• a plurality of radiating elements arranged in a planar array;
• a plurality of variable phase shifters, each one of the plurality of variable phase shifters connected to a respective one of the plurality of radiating elements;
• and
• a beam forming network for forming spot beam signals and regional beam signals, wherein the beam forming network forms a regional beam signal from a combination of spot beam signals, the beam forming network having two dimensional stacks of Rotman lenses provided with a first set of ports, each one of the first set of ports connected to a respective one of the plurality of radiating elements with the respective one of the plurality of variable phase shifters interposed therebetween, wherein the two dimensional stacks of Rotman lenses generate frequency invariant spot beam signals which are communicated between the radiating elements and the two dimensional stacks of Rotman lenses via the first set of ports for transmission and reception of spot beams and regional beams by the plurality of radiating elements;
• wherein the phase shifters are adjusted to steer the spot beams and the regional beams to desired locations.