In this article, a sixth-order differential narrowband high-temperature superconducting (HTS) common-mode filter (CMF) is presented. First of all, based on the proposed superconducting composite right-/left-handed (SCRLH) resonator, the equivalent lumped-element circuit models of differential-mode (DM) and common-mode (CM) are established, with the resonant frequencies derived and element values extracted. Then, the dispersion diagram and unloaded quality factor ( Q_u ) are plotted to demonstrate the intrinsic properties of wide stopband and low losses. Meanwhile, the relationship between structural parameters and DM rejection bandwidth is also explored. Finally, to verify the mentioned merits of SCRLH unit, a differential narrowband CMF circuit is taken into implementation with the constructed electromagnetic coupling types studied for better CM noise suppression and multiple transmission paths to generate out-of-band transmission zeros. Experimental results of the fabricated prototype with HTS technology are in good accordance with the simulations so as to demonstrate the increased DM rejection band, high CM suppression, and low insertion losses. Thus, the design theory has been validated as good potential to apply to superconducting receiver of high sensitivity and anti-CM noise interference.

中文翻译：

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使用超导复合右手/左手谐振器的共模滤波器设计

在本文中，提出了一种六阶差分窄带高温超导（HTS）共模滤波器（CMF）。首先，基于所提出的超导复合右/左手（SCRLH）谐振器，建立了差模（DM）和共模（CM）的等效集总元件电路模型，并导出了谐振频率和提取的元素值。然后，色散图和卸载品质因数（ 绘制Q _u ) 是为了展示宽阻带和低损耗的固有特性。同时，还探讨了结构参数与DM抑制带宽之间的关系。最后，为了验证 SCRLH 单元的上述优点，采用差分窄带 CMF 电路实现，并研究了所构建的电磁耦合类型，以实现更好的 CM 噪声抑制和多个传输路径以生成带外传输零点。采用高温超导技术制造的原型机的实验结果与仿真结果非常吻合，从而证明了增加的DM抑制带、高共模抑制和低插入损耗。因此，该设计理论已被证实具有良好的应用潜力，可应用于高灵敏度和抗共模噪声干扰的超导接收机。