High-temperature superconducting dual-spiral resonators and their application in filter miniaturization
High-temperature superconducting dual-spiral resonators and their application in filter miniaturization
复制标题
高温超导双螺旋谐振器及其在滤波器小型化中的应用
DOI：
10.1088/0953-2048/13/4/306
复制
发表时间：
2000
影响因子：
3.6
通讯作者：
B. Tan
中科院分区：
文献类型：
--
作者：
Linfeng Chen;C. Tan;Jian Lu;C. Ong;B. Tan
双螺旋谐振器由两个串联的螺旋组成，其尺寸比现有的微型微带谐振器小得多，其几何布局使其易于集成到微波电路中。用高温超导薄膜制作双螺旋谐振器具有很高的质量因数。高温超导双螺旋谐振器非常适合在MIC和MMIC蜂窝通信系统中开发微型滤波器。利用全波电磁模拟器对双螺旋谐振器的谐振特性进行了计算，并给出了数值结果。作为高温超导双螺旋谐振器的应用实例，采用YBa2 cu3o7薄膜沉积在20mm ？8毫米？0.5 mm LaAlO3衬底。实验表明，本文提出的双螺旋谐振腔结构对于滤波器小型化是非常有效的。
Dual-spiral resonators, each of which consists of two spirals connected in series, exhibit much smaller sizes than existing miniature microstrip resonators, and their geometrical layouts enable them to be easily integrated into microwave circuits. Dual-spiral resonators have very high quality factors if they are fabricated with high-temperature superconducting (HTS) thin films. HTS dual-spiral resonators are very suitable for developing miniature filters in MIC and MMIC cellular communication systems. A full-wave electromagnetic simulator is used to calculate the resonant properties of dual-spiral resonators, and numerical results are reported. As an application example of HTS dual-spiral resonators, a three-stage bandpass filter with central frequency 633 MHz is designed and fabricated with YBa2 Cu3 O7- thin films deposited on a 20 mm ? 8 mm ? 0.5 mm LaAlO3 substrate. Experiments show that the dual-spiral resonator structure presented in this paper is very effective for filter miniaturization.