Ultra-compact superconducting narrow-band filters using single- and twin-spiral resonators
Ultra-compact superconducting narrow-band filters using single- and twin-spiral resonators
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DOI：
10.1109/tmtt.2002.807826
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发表时间：
2003-02
影响因子：
4.3
通讯作者：
F. Huang
中科院分区：
文献类型：
--
作者：
F. Huang
超导滤波器使用螺旋谐振器已被证明。与曲折线相比，轨道宽度的误差对总电感的影响较小，因此提高了制造公差、仿真精度、功率处理和品质因数。线圈不需要空气桥，这在超导体中很难生产。可以使用基于谐振器之间的耦合系数以及到源和负载的耦合的标准过程来设计器件。四阶和六阶切比雪夫滤波器采用单螺旋和双螺旋证明为0.86%的带宽滤波器的中心频率约为1750 MHz。介绍了一种新的单螺旋谐振腔耦合结构。尽管非常小的尺寸约1.7/spl倍/1.7毫米，谐振器具有约30000在77 K的品质因数和滤波器可以处理约20毫瓦。
Superconducting filters using spiral resonators have been demonstrated. Compared with meander lines, errors in track width have a smaller effect on the total inductance; fabrication tolerance, simulation accuracy, power handling, and quality factor are consequently improved. The coils do not require air bridges, which are difficult to produce in superconductors. The devices can be designed using a standard procedure based on the coupling coefficients between resonators and coupling to source and load. Fourth- and sixth-order Chebyshev filters employing single and twin spirals are demonstrated for 0.86% bandwidth filters with center frequency of approximately 1750 MHz. A new coupling structure has been introduced for the single-spiral resonators. Despite the very small size of approximately 1.7/spl times/1.7 mm, the resonators have a quality factor of approximately 30000 at 77 K and the filters can handle approximately 20 mW.