Scanning Radiation Pattern Synthesis using Characteristic Mode of Airship Platform

Phased array radar operated in meter-wave band is one of the most promising techniques to cope with stealth techniques, and is also effective for long-range radar detection. Because of the large wavelength in the meter-wave band, phased array designs meet many challenges including miniaturized antenna element design and high gain. In this paper, an approach is developed to synthesize scanning radiation pattern using characteristic modes(CMs). Broadside and scanned beam patterns with scan angles of -30°, -15°, 15° and 30° also show good agreement with the desired main beam directions. The characteristic currents distribution provides the basis for the proper installation position of antenna elements.