Low-Cost Architecture Using Interleaved Thinning for Polarimetric Phased Array
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS(2024)
摘要
Polarimetric phased arrays can equip radar systems with enhanced measuring abilities but also incur high costs. This study introduces a low-cost architecture and its applications in polarimetric phased-array antennas to perform multiple tasks with an acceptable tradeoff. In this architecture, the ports of each dual-polarized element are connected to a shared channel using an element-level-controlled polarization switch. Thus, the number of components is reduced by almost half. By shifting the switches, elements can be formed into either a full array with single polarization or interleaved thinned arrays with dual polarization. For the latter, a thinning method is presented based on central symmetry constraints and sidelobe optimization. Simulation experiments on an 8 chi 8 planar array demonstrated that the proposed method can effectively obtain highly matched copolar beams with well-controlled sidelobes.
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关键词
Low-cost array,polarimetric phased array,polarimetric radar,thinned array
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