论文标题
基于多模平面螺旋oam的紧凑图案可重构天线
A Compact Pattern Reconfigurable Antenna Based on Multimode Plane Spiral OAM
论文作者
论文摘要
轨道角动量（OAM）由于其螺旋相特征，在过去几十年中引起了极大的兴趣。已经证明，平面螺旋绿（PSOAM）具有方位角域的模式重新配置的潜力，因为它解决了由不同模式的不同主叶方向引起的模式叠加难度。然而，缺乏紧凑的高纯度多模PSOAM天线阻碍了PSOAM应用的发展。在本文中，设计了由同轴谐振组（CRG）组成的紧凑型高纯度8模式PSOAM天线和设计的旋转抛物线反射器（RPR）。它的带宽在X波段中起作用140 MHz，其效率大于90 $ \％$。该天线产生的每个PSOAM光束的振幅和相位可以独立控制其进料网络和单独的谐振器设计，因此，方位角域中的任何目标模式都可以通过模式加权来大致重新配置。仿真和实验结果表明，该天线可以使基于PSOAM的模式构型成为可能，这将在基于OAM的应用中具有潜力。
Orbital angular momentum (OAM) has attracted great interest in the past few decades due to its helical phase characteristics. It has been proved that Plane spiral OAM (PSOAM) has potential in pattern reconfiguration of azimuthal domain because it solves the difficulty of mode superposition caused by different main lobe directions of different modes. However, the absence of a compact high-purity multimode PSOAM antenna hinders the development of PSOAM applications. In this paper, a compact high-purity 8-mode PSOAM antenna consisting of a coaxial resonator group (CRG) and a rotating parabolic reflector (RPR) is designed. It works in the X-band with the bandwidth of 140 MHz, and its efficiency is greater than 90$\%$. Amplitude and phase of each PSOAM beam generated by this antenna can be controlled independently owing to its feed network and separate resonators design, hence any target pattern in azimuthal domain can be approximately reconfigured by modes weighting. The simulation and experiment results show that this antenna can make the PSOAM based pattern configuration possible, which will have potential in the OAM based applications.
