当前位置: X-MOL 学术Sci. Rep. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Analytic modelling of a planar Goubau line with circular conductor
Scientific Reports ( IF 4.6 ) Pub Date : 2020-11-27 , DOI: 10.1038/s41598-020-77703-w
Tobias Schaich , Daniel Molnar , Anas Al Rawi , Mike Payne

Planar Goubau lines show promise as high frequency, low-loss waveguides on a substrate. However, to date only numerical simulations and experimental measurements have been performed. This paper analytically investigates the surface wave mode propagating along a planar Goubau line consisting of a perfectly conducting circular wire on top of a dielectric substrate of finite thickness but infinite width. An approximate equation for the propagation constant is derived and solved through numerical integration. The dependence of the propagation constant on various system parameters is calculated and the results agree well with full numerical simulations. In addition, the spatial distribution of the longitudinal electric field is reported and excellent agreement with a numerical simulation and previous studies is found. Moreover, validation against experimental phase velocity measurements is also reported. Finally, insights gained from the model are considered for a Goubau line with a rectangular conductor. The analytic model reveals that the propagating mode of a planar Goubau line is hybrid in contrast to the transverse magnetic mode of a classic Goubau line.



中文翻译:

圆形导体平面Goubau线的解析建模

平面Goubau线显示出作为基板上的高频,低损耗波导的希望。但是,迄今为止,仅进行了数值模拟和实验测量。本文分析性地研究了沿平面Goubau线传播的表面波模式,该平面Goubau线由厚度有限但宽度无限的电介质基板顶部的完美导电圆线组成。通过数值积分导出并求解了传播常数的近似方程。计算了传播常数对各种系统参数的依赖性,其结果与完整的数值模拟非常吻合。另外,报道了纵向电场的空间分布,并且与数值模拟和先前的研究极好地吻合。此外,还报道了针对实验相速度测量的验证。最后,从模型中获得的见解将考虑到具有矩形导体的Goubau线。该分析模型表明,与传统的Goubau线的横向磁模式相反,平面Goubau线的传播模式是混合的。

更新日期:2020-11-27
down
wechat
bug