ID 原文 译文
13764 此两款天线均具有结构紧凑、宽带、增益稳定的特点。 All the antennas discussed above exhibit wide bandwidth, low profile, stable realized gain and desired reconfigurability.
13765 设计并加工了一种基于双层频率选择表面 (frequency selective surface, FSS) 的一维Vivaldi阵列天线。 A dimensional Vivaldi antenna array with double layer of frequency selective surface (FSS) is designed and processed in the paper.
13766 首先采用周期边界条件分析无限大阵列中的单元特性, 利用等效传输线原理和广义散射参数矩阵来设计优化加载在Vivaldi阵列上方的介质宽角匹配层。 The periodic boundary condition is adopted to analyze infinite element characteristics of array, and the equivalent transmission principle and the generalized scattering matrix is used to design and optimize all parameters of loading layer of the wide angle matching on the top of the Vivaldi array.
13767 然后, 在所加载的双层介质匹配层表面直接印制FSS结构使阵列扫描特性得到极大改善。 Then, FSS is printed directly on the surface of dielectric layer and scanning characteristics of the array is improved significantly.
13768 仿真和实测结果表明, 一维Vivaldi阵列中心单元在712GHz的有源驻波比均小于2.5, 在810GHz波束扫描范围能够达到±60°。 Simulation and measured results show that, active standing wave ratio of the center element in the array is less than 2.5 around 7-12 GHz, and beam scanning range can reach 60° in 8-10 GHz.
13769 仿真结果还表明：采用双层FSS结构的Vivaldi阵列与未加载匹配层的Vivaldi阵列相比, 在711.5GHz增益有24dB的提高。 The simulation results show that gain of Vivaldi array with double FSS structure is 2-4 dB higher than that without matching layer in range of 7-11.5 GHz.
13770 同时在扫描至±60°时, FSS结构的加载使得阵列在对应扫描角下的交叉极化下降了510dB。 Meanwhile, when scanning to 60°, the cross polarization of the array loaded with FSS is decreased by 5-10 dB.
13771 针对圆环形阵列天线产生轨道角动量 (orbital angular momentum, OAM) 涡旋波的技术, 提出了宽带圆极化单臂螺旋天线 (single-arm spiral antenna, SASA) 构成的机械可重构圆环形阵列天线, 并深入研究了OAM涡旋波的模态检测和收发情况。 The mode detection and transmission of the orbital angular momentum vortex wave are studied intensively on the basis of the proposed mechanically reconfigurable circular array antenna.
13772 利用SASA的相位特性, 调控各阵元绕自身轴线的旋转角度, 可灵活控制OAM涡旋波的主波束辐射方向。 Furthermore, the main beam direction of the orbital angular momentum (OAM) vortex wave can be flexibly controlled by adjusting the rotation angle of each array element around its axis according to the phase characteristics of the SASA.
13773 该设计可实现OAM模态和涡旋波辐射方向双可重构调控特性, 并根据SASA的旋转角方向实现左旋圆极化或右旋圆极化OAM涡旋波。 The proposed design can realize the vortex beam direction and OAM mode reconfigurability. In addition, the left-hand circular polarization or right-hand circular polarization vortex wave can be adjusted by changing the rotation angle of the SASA.