论文标题
通过使用双相变速器，可以提高波束形成能力的分阶段阵列
Phased Array With Improved Beamforming Capability via Use of Double Phase Shifters
论文作者
论文摘要
被动电子扫描阵列（PESA）由于其简单结构和低成本而被广泛使用。 {其天线重量具有单位模量，因此，只能控制权重阶段。 PESA的Beampattern设计的自由度有限，只能控制主梁的方向。}在本文中，我们提出了一种新颖的方法，通过使用双相位变速器（DPS），通过使用更高的自由度来提高PESA的光束形成能力。通过这样做，可以控制天线重量的大小和相位，从而在Beampattern设计中更灵活。我们还考虑了相位变速器的物理分辨率限制，并提出了一种使用DPS近似给定复杂光束器的方法。仿真结果表明即使在低期分辨率下，波束形成的改进也有明显的改进。
The passive electronically scanned array (PESA) is widely used due to its simple structure and low cost. {Its antenna weights have unit modulus and thus, only the weights phases can be controlled. PESA has limited degrees of freedom for beampattern design, where only the direction of the main beam can be controlled.} In this paper we propose a novel way to improve the beamforming capability of PESA by endowing it with more degrees of freedom via the use of double phase shifters (DPS). By doing so, both the magnitude and the phase of the antenna weights can be controlled, allowing for more flexibility in beampattern design. We also take into account the physical resolution limitation of phase shifters, and propose a method to approximate a given complex beamformer using DPS. Simulation results indicate significant beamforming improvement even at low phase resolution.
