22阶C波段高温超导宽带滤波器的研制
Development of 22nd-Pole C-Band High Temperature Superconducting Wideband Filter
DOI: 10.12677/ojcs.2025.144008, PDF,   
作者: 闫 旭：河南财经政法大学计算机与信息工程学院，河南 郑州；李灏毅, 王昭月, 季来运, 孙延东, 闫 鑫*：天津海芯电子有限公司，天津
关键词: 高温超导滤波器；矩形系数；铝酸镧；镝钡铜氧；HTS Filter； Rectangular Coefficient； LaAlO3； DyBCO
摘要: 本文研制了一款22阶高温超导宽带滤波器，成功实现了矩形系数小于1.2的多阶高温超导宽带滤波器的设计与制作。文中给出了该款滤波器的等效电路、理论频率响应曲线、理论耦合矩阵、设计过程、物理电路结构及模拟结果，有效地解决了C波段信号干扰严重等问题。最后在0.5 mm厚的铝酸镧(LaAlO3)衬底上的DyBa2Cu3O7 (DyBCO)高温超导薄膜上，成功制作出22阶高温超导宽带滤波器。滤波器的工作频率为3950 MHz，相对带宽为15.19%，插入损耗大于−1.4 dB，带外抑制小于−60 dB以上，实测结果与模拟结果吻合良好。
Abstract: This paper presents the development of a 22nd-pole high-temperature superconducting (HTS) wideband filter, successfully achieving the design and fabrication of a multi-order HTS wideband filter with a rectangular coefficient of less than 1.2. The equivalent circuit, theoretical frequency response curve, theoretical coupling matrix, design process, physical circuit structure, and simulation results of the filter are provided, effectively addressing issues such as severe signal interference in the C-band. Finally, a 22nd-pole HTS wideband filter was successfully fabricated on a 0.5 mm-thick lanthanum aluminate (LaAlO3) substrate coated with DyBa2Cu3O7 (DyBCO) high-temperature superconducting thin film. The filter operates at a center frequency of 3950 MHz with a relative wideband of 15.19%, an insertion loss better than −1.4 dB, and out-of-band suppression exceeding −60 dB. The measured results show good agreement with the simulations.
文章引用：闫旭, 李灏毅, 王昭月, 季来运, 孙延东, 闫鑫. 22阶C波段高温超导宽带滤波器的研制[J]. 电路与系统, 2025, 14(4): 75-83. https://doi.org/10.12677/ojcs.2025.144008

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