ID |
原文 |
译文 |
13724 |
研究了纵向槽和径向槽组合的波纹喇叭馈源的优化设计方法。 |
The optimization method of horns that combine axial and radial slots was studied. |
13725 |
基于旋转体时域有限差分算法分析波纹喇叭的性能, 结合协方差矩阵自适应进化策略, 以天线口径效率为目标, 优化设计了一款Ku频段波纹喇叭馈源, 并加工和测试了馈源样机。 |
Body of revolution finite difference time domain algorithm was applied in analyzing horns. A corrugated horn working in the Ku band was designed and optimized using covariance matrix adaptation-evolution strategy for better aperture efficiency.The optimized horn was fabricated and tested. |
13726 |
计算与实测结果表明, 在10.7~12.75GHz频带内, 该喇叭具有良好的阻抗匹配和辐射特性, 应用于标准卡塞格仑天线时, 天线口径效率优于78%, 验证了这种优化设计方法的有效性。 |
Simulated and measured results show a good agreement in both impedance matching and radiation patterns in 10.7—12.75 GHz.The aperture efficiency is better than 78% with the feed illuminating a classical Cassegrain antenna, which proves the effectiveness of this optimization method. |
13727 |
设计了一种S波段紧凑型双圆极化有源接收天线, 该有源接收天线将微带贴片天线与90°混合电桥、低噪声放大器集成设计。 |
A compact dual-circularly-polarized active receiving antenna is designed for S-band applications, which integrates a microstrip patch antenna with a 90° hybrid bridge and low noise amplifiers. |
13728 |
既实现了有源天线的整体小型化又提高了各器件间的连接效率。 |
The proposed active receiving antenna not only achieves the miniaturization of the antenna but also improves the connection efficiency among each device. |
13729 |
并通过背馈玻璃绝缘子和一种半差分的方式馈电, 在改善微带贴片天线方向图对称性的同时, 简化了传统差分式馈电的复杂结构。 |
Meanwhile, the antenna is probe-fed by glass insulators through a semi-differential method which improves the symmetry of the antenna radiation pattern and simplifies the structure of conventional differential feeding method. |
13730 |
仿真和实测结果表明, 该有源接收天线在2.2~2.3GHz内端口驻波比小于1.47, 噪声系数小于0.73dB, 主瓣内轴比小于2.4dB, G/T值大于-13.9dB/K, 与已有公开文献的有源接收单元天线相比, 在保持结构紧凑的同时, 其G/T值有较大幅度提升。 |
The simulated and measured results show that the voltage standing wave ratio (VSWR) of the active receiving antenna is less than 1.47, the noise figure is less than 0.75 dB, the axis ratio within the main lobe is less than 2.4 dB, and the G/Tvalue is greater than -13.9 dB/K from 2.2 to 2.3 GHz. The G/Tvalue of the antenna is greatly improved compared with existing active receiving antennas. |
13731 |
设计了一种结构极为紧凑的Ku频段正交模耦合器 (orthomode transducer, OMT) , 器件最大尺寸36mm, 公共端口为方波导, 适用于复杂的多馈电网络集成系统。 |
A very compact orthomode transducer design in Ku-band is established, which is suited for complex multi-feed network integration system, the common port is square waveguide and the maximum size is 36 mm. |
13732 |
通过一系列阶梯变换以及侧壁缝隙耦合形式实现了电磁波的极化过滤, 两个输出端口分别对应一种极化波。 |
The polarization filtering of electromagnetic wave is realized through a series of ladder transformation and side wall gap coupling.The two output ports correspond to one kind of polarization wave respectively. |
13733 |
加工了耦合器实物并进行了测试, 实测15%频带范围内端口驻波小于1.6, 两端口隔离度小于-50dB, 仿真和实测数据一致。 |
The coupler is processed and tested.The measured port standing wave in the 15%band range is less than 1.6, the isolation degree of the two ports is less than -50 dB, and the measured result is agree with the simulation result. |