ID 原文 译文
13704 介绍了一种多模态涡旋电磁波单元天线设计方法。 This paper presents a multi-mode orbital angular momentum (OAM) wave element antenna design.
13705 利用四个同心短路圆环微带贴片产生八模态的涡旋电磁波波束,该单元天线结构简单, 尺寸小。 These eight-mode OAM beams are generated simultaneously using four concentric shorted annular ring microstrip patches, and the antenna is simple in structure and small in size.
13706 仿真与实验结果表明, 八个模态 (l=±1, ±2, ±3, ±4) 均拥有良好的涡旋相位特性, 相应阶数的单元增益分别为4.8 dBi, 4.1 dBi, 5.1 dBi, 5.3 dBi, 各模态的阻抗带宽均大于100MHz。 Simulation and test results show that eight modes (l=± 1, ± 2, ± 3, ± 4) have good vortex phase characteristics.Meanwhile, the element gains of corresponding modes are 4.8 dBi, 4.1 dBi, 5.1 dBi, and 5.3 dBi, respectively, and the impedance bandwidth of all modes are greater than 100 MHz.
13707 该天线为多模涡旋电磁波应用提供了一种新的可能。 It can provide a new possibility for future multi-mode OAM wave applications.
13708 为了减少工作在L波段的机载天线对高于其工作频率范围来波的散射, 设计了一种非谐振单元组成的多层级联结构阵列。 To reduce the scattering of the airborne antenna working in the L band to the wave which is higher than its working frequency range, a multi-layer cascade structure array composed of non resonant elements is designed.
13709 它是在十字网栅电感层基础上, 通过螺旋曲折线的形式有效延长电流路径, 加大电感层的感性效应, 这种折线螺旋能够控制单元尺寸, 还能抑制高阶模和栅瓣的出现。 Based on the cross grid inductance layer, it effectively prolongs the current path through the form of spiral curved line and increases the inductive effect of the inductance layer. The line helix can control the size of the unit and suppress the appearance of the high order mode and the gate flap.
13710 采用修改电容层金属图案的方法, 将贴片单元变为谐振型的方环单元, 并将这种带阻型方环单元的传输极点置于阵列干涉点处, 可以有效抑制由阵列干涉造成的窄传输峰, 从而减少高频电磁波散射的影响, 达到减小电磁散射对飞机雷达散射截面的影响, 从而实现表面频率选择。 By modifying the capacitance layer metal pattern, the patch unit is transformed into a resonant square ring unit, and the transmission pole of the banded square ring element is placed at the array interference point, which can effectively suppress the narrow transmission peak caused by the array interference. In order to reduce the influence of the high frequency electromagnetic scattering, the influence of the electromagnetic scattering on the radar cross section of the aircraft is reduced, and the selection of the surface frequency is realized.
13711 采用高频电磁场仿真软件对上述设计的物理模型和等效电路模型进行了仿真, 并对结构尺寸进行了优化设计。 The simulation of the physical and equivalent circuit models of the above design is carried out by the high frequency electromagnetic simulation software, and the size of the structure is optimized.
13712 通过实验对设计样品进行了测试和分析, 结果表明上述设计能够达到频率选择的目的。 The design samples are tested and analyzed, and the results show that the above design can achieve the purpose of frequency selection.
13713 在相控阵天线球面近场测量中, 有限扫描面和相控阵天线波束扫描将会引起较大的截断误差。 In spherical near-field measurements of phased array antennas, the relatively large truncation errors can be caused by finite scan sphere and the beam scanning of phased array antennas.