Patent ID: 7834803

Claim:
A method for electronically steering a polarized monopulse RADAR beam across an array of RADAR feed horns in a planar direction defined by at least two co-planar, similarly polarized, stacked feed horn pairs, the method comprising: activating the first feed horn pair, the first feed horn pair comprising a first and a second feed horn in the feed horn array, wherein the first and second feed horns are mutually adjacent, stacked orthogonal to the planar direction, and similarly polarized, to produce a RADAR beam from the phase center of the first feed horn pair; de-activating the first feed horn pair; and activating the second feed horn pair, the second feed horn pair comprising a third and a fourth feed horn in the feed horn array, wherein the third and fourth feed horns are mutually adjacent, stacked orthogonal to the planar direction, and similarly polarized, and further wherein the second feed horn pair is adjacent and similarly polarized to the first feed horn pair, and wherein the second feed horn pair is co-planar to the first feed horn pair in the planar direction, said activating the second feed horn pair moving the phase center of the RADAR beam emitted from the feed horn array from the phase center of the first feed horn pair to the phase center of the second feed horn pair.