Waveguide Hybrid Septum Coupler
Waveguide Hybrid Septum Coupler
复制标题
波导混合隔垫耦合器
DOI：
10.1109/tmtt.2021.3074194
复制
发表时间：
2021
影响因子：
4.3
通讯作者：
J. Angevain
中科院分区：
文献类型：
--
作者：
N. Fonseca;J. Angevain
介绍了一种基于膜片偏振器工作原理的宽壁波导混合耦合器的设计。这种E面耦合器需要在两条平行波导传输线的公共宽壁中有一个大的小孔才能发挥作用，便于其制造和组装。该混合耦合器的工作原理进行了详细说明，由方程的支持，使一个链接与著名的3 dB串联耦合器，并使一个良好的起点优化的目的的定义。该概念通过在17.3-20.2 GHz频率范围内工作的原型的设计、制造和测试得到进一步验证。在19.4%（17.2-20.9 GHz）的分数带宽上获得了良好的结果，轴比和回波损耗（RL）分别优于0.5和24 dB。对于要求较低的应用（轴比低于3dB且RL优于20 dB），该操作范围可扩展至高达约27%（16.8- 22.0GHz）。这是一个有前途的解决方案的设计先进的馈电系统和波束形成网络的通信卫星有效载荷的一部分。
The design of a patented broadwall waveguide hybrid coupler, derived from the working principle of a septum polarizer, is presented. This $E$ -plane coupler requires a single and large aperture in the common broadwall of the two parallel waveguide transmission lines to function, facilitating its manufacturing and assembly. The working principle of this hybrid coupler is detailed, supported by equations making a link with the well-known 3-dB tandem coupler and enabling the definition of a good starting point for optimization purposes. The concept is further validated through the design, manufacture, and test of a prototype working over the frequency range 17.3–20.2 GHz. Good results are obtained over a fractional bandwidth of 19.4% (17.2–20.9 GHz) with axial ratio and return loss (RL) better than 0.5 and 24 dB, respectively. This operating range may be extended up to about 27% (16.8–22.0 GHz) for less demanding applications (axial ratio below 3 dB and RL better than 20 dB). This is a promising solution for the design of advanced feed systems and beamforming networks part of communication satellite payloads.