利用平面超宽带天线的对称性减小尺寸和提高性能
Utilizing Symmetry of Planar Ultra-Wideband Antennas for Size Reduction and Enhanced Performance
摘要：
随着超宽带应用的不断发展，天线研究人员在设计新颖的操作几何结构方面面临着巨大的挑战。单极和准单极天线被认为是最紧凑和易于整合的便携式设备的解决方案，利用印刷电路板（PCB）技术的优势。这种类型的大多数天线具有对称结构。通过满足对称条件，同时将天线切成两半以实现紧凑结构，可以获得更宽的工作带宽。然而，没有应用这种技术的通用方法。本文解决了这个问题，提出了一个共同的馈电技术，可以应用于任何天线，这是小型化使用其对称结构。所提出的技术使得馈送的减半结构，以实现更广泛和更好的阻抗匹配比报告的全尺寸天线。将特征模态理论应用于准单极子结构，以深入了解天线的工作机理。辐射模式也与模态电流分布，以了解修改后的结构的辐射特性。最后，该方法在一些示例天线上实现，以说明其潜力。
英文摘要：
With the increasingly new ultra wide-band applications, antenna researchers face huge challenges in designing novel operational geometries. Mono-pole and quasi-mono-pole antennas are seen to be the most compact and easily incorporate able solution for portable devices taking the advantages of printed circuit board (PCB) techniques. Most antennas of such type have symmetrical structures. It is possible to attain wider operating bandwidths by meeting symmetry conditions while chopping the antenna into halves for a compact structure. However, there is no generalized way of applying such a technique. The presented paper addresses this issue by proposing a common feeding technique that can be applied to any antenna which is miniaturized using its symmetrical structure. The proposed technique enables feeding the halved structure to achieve wider and better impedance matching than the reported full-size antennas. The theory of characteristic modes is applied to quasi-mono-pole structures to get an insight of the antennas mechanism. The radiation patterns are also correlated with modal current distributions to understand the radiation characteristics of the modified structure. Lastly, the method is implemented on some example antennas to illustrate its potential.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
