Design and fabrication of a nonradiative dielectric waveguide circulator
Design and fabrication of a nonradiative dielectric waveguide circulator
复制标题
非辐射介质波导环行器的设计与制造
DOI：
10.1109/22.8917
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
T. Yoheyama
中科院分区：
文献类型：
--
作者：
H. Yoshinaga;T. Yoheyama
描述了一种用于构建在 50 GHz 下使用的高性能非辐射介质波导（NRD 波导）循环器的技术。模式抑制器可将不需要的模式减少到可忽略的水平，设计并用于显着提高环行器性能。在环行器的每个端口安装半波长步进变压器以增加工作带宽。该环行器的插入损耗小于0.3 dB，20 dB 隔离带宽约为2.6 GHz。基于等效电路表示分析了NRD波导循环器的特性。该分析极大地促进了循环器的设计过程。 >
A technique is described for constructing a high-performance nonradiative dielectric waveguide (NRD guide) circulator for use at 50 GHz. A mode suppressor, which serves to reduce unwanted modes to a negligible level, was devised and used to improve circulator performance significantly. A half-wavelength step transformer was installed at each port of the circulator to increase the operational bandwidth. The insertion loss of this circulator is less than 0.3 dB, and the 20-dB isolation bandwidth is about 2.6 GHz. Characteristics of the NRD guide circulator are analyzed based on an equivalent circuit representation. This analysis considerably facilitates the design procedure of the circulator. >