基于非辐射介质波导的90°弯曲理论与实验研究

IF 3.4 0 ENGINEERING, ELECTRICAL & ELECTRONIC
Meiling Ou;Yiang Chen;Dagang Liu;Haiyang Wang;Tianming Li;Biao Hu;Cheng Zhang;Fadhel M. Ghannouchi;Hao Li
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引用次数: 0

摘要

非辐射介质(NRD)波导被认为是适合毫米波应用的传输线,因为它们是平坦的和低损耗的。然而,由于具有最低损耗的模式并不是具有最低截止频率的模式,NRD波导通常在过模状态下使用。设计了许多基于NRD的不需要变形的器件,并取得了良好的效果。然而,由于原始耦合波分析方法的不适用性,NRD波导在保持截面不变的情况下在传播方向弯曲的物理机制尚未完全阐明。在这封信中,我们将重点放在90°NRD弯曲上,并试图解释弯曲过程中NRD的模态耦合。设计的传输效率大于95%的w波段NRD弯道带宽为5 GHz。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Theoretical and Experimental Investigations of a 90° Bend Based on Nonradiative Dielectric Waveguide
Nonradiative dielectric (NRD) waveguides are recognized as suitable transmission lines for millimeter-wave applications, as they are planarized and of low loss. However, since the mode with the lowest loss is not the mode with the lowest cutoff frequency, NRD waveguides are often used in an overmoded state. Many devices based on NRD that do not need to be deformed are designed and have achieved good results. Nevertheless, the physical mechanism underpinning the bending of NRD waveguides in the direction of propagation while maintaining an unchanged cross section has not been fully elucidated, due to the inapplicability of the original coupled-wave analysis method. In this letter, we focus on a 90° NRD bend and attempt to explain the mode coupling of NRD during the bending process. The bandwidth of the designed W-band NRD bend with a transmission efficiency greater than 95% is 5 GHz.
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