Advanced Antenna Technology (AAT) is the R&D leader in phased-array antenna technology. Unlike traditional antennas, such as the monopole, yagi, and dish designs, phased-array antennas are plate antennas based on printed-circuit technology. Phased-array antennas are low in cost, low in profile, small in size, light in weight, conformal to article, suitable for integration with other components, and broad in frequency bandwidth. It is also known as the “smart-skin” antenna because of its flexibility in design, structure, and performance, all mandatory ingredients for the 21st century.