Wang Shixiong, Zhang Yilin, Yi Jianjia
School of Information and Communications Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
The 10th Research Institute of China Electronics Technology Group Corporation, Chengdu 610036, China .
Materials (Basel). 2023 Sep 27;16(19):6420. doi: 10.3390/ma16196420.
The mode converter, as a passive mode conversion device in transmission lines, is well-investigated and widely implemented in various electromagnetic systems. However, most traditional mode converters can only realize a single conversion mode. Thus, a mode converter achieving multiple controllable output modes is urgently needed. In this paper, a reconfigurable mode converter operating in the microwave range is achieved by embedding a deformable all-dielectric material with quadrilateral shape into a rectangular waveguide based on coupled-mode theory. It can achieve different target modes with controllable output for the same input by exciting the deformable all-dielectric material. The design principle of the mode converter is expounded concretely and simulation is carried out using HFSS software 2022 R2. Experimental results, consisting of the simulation results, demonstrate that the proposed mode converter can achieve various mode conversions with mode purity higher than 95%. This article innovatively applies deformable materials to waveguide mode conversion, expanding the application of deformable memory materials in electromagnetic devices.
模式转换器作为传输线中的一种无源模式转换装置，已得到充分研究并广泛应用于各种电磁系统中。然而，大多数传统模式转换器只能实现单一的转换模式。因此，迫切需要一种能够实现多种可控输出模式的模式转换器。本文基于耦合模理论，通过将四边形形状的可变形全介质材料嵌入矩形波导中，实现了一种工作在微波频段的可重构模式转换器。通过激励可变形全介质材料，它可以在相同输入下实现具有可控输出的不同目标模式。具体阐述了模式转换器的设计原理，并使用HFSS软件2022 R2进行了仿真。由仿真结果组成的实验结果表明，所提出的模式转换器能够实现各种模式转换，模式纯度高于95%。本文创新性地将可变形材料应用于波导模式转换，拓展了可变形记忆材料在电磁器件中的应用。
