3D Gaussian beam generation techniques have been studied by many researchers, while the problem of 2D Gaussian beam generations have not been addressed fully. However, 2D Gaussian beams are still useful in research and applications. This article presents the mechanism, design, simulation, and measurement of a 2D Gaussian beam launcher, which allows the easy control of the width and the location of Gaussian beam waist. The proposed Gaussian beam launcher consists of a radiator array fed with the designable excitation phase and magnitude to each radiator, so as to generate the necessary boundary condition that the Gaussian beam can be excited and propagate. Both simulation and measurement results are nearly identical with the profile of the lowest order 2D Gaussian beam mode. The proposed 2D Gaussian beam launcher is suitable as the excitation source of parallel plate waveguide measurement systems. By integrating tunable components, it can be easily extended in the future to control Gaussian beam parameters dynamically.

中文翻译：

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二维高斯光束发射器在平行板波导场测绘系统中的应用

许多研究人员已经研究了3D高斯光束产生技术，而2D高斯光束产生的问题尚未得到充分解决。但是，二维高斯光束在研究和应用中仍然有用。本文介绍了二维高斯光束发射器的机理，设计，仿真和测量，它可以轻松控制高斯光束腰的宽度和位置。提出的高斯光束发射器由辐射器阵列组成，该辐射器阵列向每个辐射器馈入可设计的激发相位和幅度，从而生成必要的边界条件，使高斯光束可以被激发和传播。模拟和测量结果都与最低阶2D高斯光束模式的轮廓几乎相同。所提出的二维高斯光束发射器适合用作平行板波导测量系统的激发源。通过集成可调组件，将来可以轻松扩展它以动态控制高斯光束参数。