| 1. | Methods of near - field measurement for planar waveguide - fed slot arrays with low sidelobes
低副瓣平板裂缝天线性能近场测试方法 |
| 2. | But it is tough to present a definite generalization to how exactly the slot size influences the radiation of microstrip antenna
但是缝隙的尺寸和加载位置对天线性能的影响是十分复杂的。 |
| 3. | Electromagnetic ( photon ) structure is drawing more and more attention and development of theories in this field will benefit a lot for the enhancement of antenna performance
电磁(光子)晶体正受到越来越多人的关注，这方面理论研究的加深必将进一步促进天线性能的提高。 |
| 4. | Then the influences of the dimension parameters on the impedance property and radiation property are studied , and the relationship between the feed height and the impedance property is presented
并讨论了天线尺寸对于阻抗以及辐射特性的影响,提出了馈电高度对于天线性能的重要意义。 |
| 5. | Aerials for the reception of sound and television broadcasting in the frequency range 30mhz to 1ghz . part 4 : guide for the preparation of aerial performance specification detailed specification sheet format
30mhz 1ghz声音和电视广播接收天线.第4部分：天线性能规范的编制导则详细规范表格式 |
| 6. | The first chapter of this thesis is attached more importance on several parameters to describe the performance of ultra - wideband ( uwb ) antennas , a few ordinary types of uwb antennas and their main analytical methods
本论文第一章简单介绍了描述超宽带天线性能的几个重要参数、几种常用常见的超宽带天线以及超宽带天线的分析方法。 |
| 7. | The main content of chapter ii describes the positive influence of rounded corners on keen vertexes of wide slot antennas and bowtie ones . a great deal of experiments and simulations prove the conclusion mentioned above
第二章主要讲述在宽槽天线( wideslotantenna )和多个蝴蝶结天线( bowtieantenna )辐射面的尖锐顶点处倒圆角对天线性能的改善作用。 |
| 8. | A optimized design of the bend is made using the high frequency simulation software . 5 . the coupler and the bend cause a phase change in the wave transmitted past the coupler in the sinuous feed and also a phase change in the coupled po ~ ver
分析计算了耦合器、波导弯头引入相位误差对天线性能的影响，在此基础上，采用对各个耦合器之间波导长度调节的方法，对阵面相位分布进行补偿。 |
| 9. | At different scanning angles , by analyzing the effects that the surrounding elements on the middle one , we conclude that the reflected vote of the middle element decreases , that ’ s the loss of reflected power decrcases , so the input power will increase
结果发现,在不同扫描角下,中心阵元的反射电压得到减小,因此,达到了反射功率损耗减小,传向天线单元输入端功率增加,天线性能提高的目的。 |
| 10. | However , many problems are emerging and urgently needed to be solved in the mimo communication system due to the introduction of multiple antennas . an excellent performance of the multi - antenna system ensures that the mimo system achieve its advantages
优异的多天线性能是mimo系统实现其各种优势的根本保障,本文以863项目“新型天线与分集技术研究”为契机,围绕移动终端多天线设计这一主题展开了系统的研究。 |
