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Design of high selectivity narrowband eight-order high-temperature superconducting sextaplexer
Superconductor Science and Technology ( IF 3.6 ) Pub Date : 2020-10-14 , DOI: 10.1088/1361-6668/abaa37
Li-Tian Wang 1 , Ming He 1, 2 , Yang Xiong 3 , Wei Zhang 4 , Hai-Hua Chen 1, 5 , Lu Ji 1
Affiliation  

A C-band high-temperature superconducting six-channel multiplexer (sextaplexer) is proposed in this paper. A distributed coupling scheme is introduced, with which the bandpass filter (BPF) in each channel can be designed individually. The computational complexity of the proposed method is linearly increased as the number of the channels is getting larger, which is much lower than the traditional method. The proposed coupling scheme requires no extra matching network, which helps to reduce the size of the multiplexer circuit. The sextaplexer consists of six high-order BPFs with cascaded quadruplet structure. A pair of transmission zeros can be introduced to make the BPF have high selectivity. The example sextaplexer works at the C-band and each fractional bandwidth is about 0.8%. The center frequency ratios and the isolations of each adjacent channel can reach 1.01 and 42 dB, respectively. The measurement results match well with the simulation results, which verifies the effectiv...

中文翻译:

高选择性窄带八阶高温超导六面体的设计

本文提出了一种C波段高温超导六通道多路复用器(sextaplexer)。介绍了一种分布式耦合方案,利用该方案可以分别设计每个通道中的带通滤波器(BPF)。所提出的方法的计算复杂度随着信道数量的增加而线性增加,这远低于传统方法。所提出的耦合方案不需要额外的匹配网络,这有助于减小多路复用器电路的尺寸。六联体由六个具有级联四联体结构的高阶BPF组成。可以引入一对传输零,以使BPF具有高选择性。示例性六工器在C波段工作,每个小数带宽约为0.8%。每个相邻通道的中心频率比和隔离度分别可以达到1.01和42 dB。测量结果与仿真结果吻合良好,验证了其有效性。
更新日期:2020-10-16
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