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Subterahertz Filtering Six-Port Junction
IEEE Transactions on Microwave Theory and Techniques ( IF 4.3 ) Pub Date : 2022-07-11 , DOI: 10.1109/tmtt.2022.3186322
Xun Chen 1 , Milan Salek 2 , Qingfeng Zhang 1 , Yi Wang 2
Affiliation  

This article presents a ${D}$ -band ${E}$ -plane 90° filtering coupler and a ${D}$ -band six-port junction (SPJ), both working at 150 GHz. The coupler is formed by ten resonators, having a fourth-order Chebyshev response. Two of the couplers were combined with a 90° 3-dB branch-line coupler to build the filtering SPJ with 20 resonators in total. Inheriting from the filtering coupler, the SPJ also has a fourth-order Chebyshev response. A coupling matrix (CM) consisting of both resonant and nonresonant nodes, based on the coupling topology, was constructed to predict the theoretical responses. Guided by this CM, the coupler and the SPJ were designed and modeled. In addition, two silicon-based absorber chips were designed and implemented as two matched loads in the filtering SPJ. The SPJ was optimized, fabricated, and tested. The center frequency of the SPJ is 150 GHz and the bandwidthis 4 GHz. Simulation shows 0.5–0.7-dB insertion loss at 150 GHz and a maximum 3° phase error in the working band. The measurement gives the same center frequency andbandwidth. The response shows 0.7–2.0-dB insertion loss at 150 GHz and a maximum 15° phase error in the working band.

中文翻译:

亚赫兹滤波六端口结

本文介绍了一个 ${D}$-乐队 ${E}$-平面90°滤波耦合器和一个 ${D}$波段六端口结 (SPJ),均工作在 150 GHz。耦合器由十个谐振器组成,具有四阶切比雪夫响应。其中两个耦合器与一个 90° 3-dB 支线耦合器相结合,以构建总共具有 20 个谐振器的滤波 SPJ。SPJ 继承了滤波耦合器,还具有四阶切比雪夫响应。基于耦合拓扑结构,构建了一个由谐振节点和非谐振节点组成的耦合矩阵(CM)来预测理论响应。在这个CM的指导下,耦合器和SPJ被设计和建模。此外,两个硅基吸收器芯片被设计并实现为滤波 SPJ 中的两个匹配负载。SPJ 经过优化、制造和测试。SPJ 的中心频率为 150 GHz,带宽为 4 GHz。模拟显示 0.5–0。150 GHz 时的插入损耗为 7 dB,工作频带中的最大相位误差为 3°。测量给出相同的中心频率和带宽。响应显示在 150 GHz 处的插入损耗为 0.7–2.0-dB,工作频带中的最大相位误差为 15°。
更新日期:2022-07-11
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