Investigation of a circular TE11-TE01-mode converter in stepped waveguide technique
Investigation of a circular TE11-TE01-mode converter in stepped waveguide technique
复制标题
阶梯波导技术中圆形 TE11-TE01 模式转换器的研究
DOI：
10.1017/s1759078715000203
复制
发表时间：
2015
影响因子：
1.4
通讯作者：
B. Will
中科院分区：
文献类型：
--
作者：
C. Schulz;C. Baer;T. Musch;I. Rolfes;B. Will
一个紧凑的和宽带TE 11-TE 01模式转换器，适用于各种工业应用，如旁路电平测量，在这方面的贡献。基于阶梯波导技术，详细讨论了所推荐的转换器设计的主要优点和TE 01模的特定场分布。该转换器是针对23至28 GHz的频率范围示例性地呈现的，该频率范围对应于中心频率的大约20%的带宽。大量的三维电磁场模拟进行优化的转换器，并调查其反射和传输行为。通过6个不同的单元件和11个部件实现，CST Microwave Studio可以进行快速有效的模拟。考虑到实际的生产工艺参数，如圆角或公差，实现了良好的回波损耗（最好为17 dB）、插入损耗（0.1 dB）和出色的模式纯度。与背靠背、真实干扰器场景和使用第一原型的远场测量相比，可以无限制地验证预期的出色转换器行为。因此，所提出的转换器设计的适用性被证明和可行性被证明。
A compact and broadband TE11-TE01-mode converter, suitable for various industrial applications like bypass level measurements, is presented in this contribution. Based on stepped waveguide technique, the main advantages of the recommended converter design and the specific field distribution of the TE01-mode are discussed in detail. The converter is presented exemplary for a frequency range from 23 to 28 GHz, which corresponds to a bandwidth of approximately 20 % of the center frequency. Numerous three-dimensional electromagnetic field simulations are performed to optimize the converter and to investigate its reflection and transmission behavior. Realized by six different single elements and 11 parts in total, fast and effective simulations can be performed with CST Microwave Studio. Considering realistic production process parameters, like fillets or tolerances, a good return loss better 17 dB, an insertion loss of 0.1 dB, and an excellent mode purity are achieved. Compared with back-to-back, realistic disturber scenario, and far-field measurements with a first prototype, the expected excellent converter behavior can be validated without limitations. Hence, the suitability of the presented converter design is proven and the feasibility is demonstrated.