A high-performance narrowband high temperature superconducting filter

• 来源期刊: 科学通报(英文版)
• 学科: 工学
• 关键词: 高温超导滤波器 窄带 性能 中心频率 相对带宽 高选择性 传输零点 椭圆函数
• 年，卷（期）: 2010,（14）
• 页码范围: 1367-1371
• 页数: 5页
• 分类号: TN713 TN915.1
• 语种: 英文

摘要

Recent development of a high-performance narrowband high-temperature superconducting (HTS) filter is presented. A 10-pole quasi-elliptic function response filter with two pairs of transmission zeros (for high selectivity), which has a center frequency of 2.185 GHz and a 3 dB bandwidth of 10 MHz (a fractional bandwidth of 0.45%), is introduced. The filter was fabricated on a 40 mm×16 mm×0.5 mm MgO wafer with double-sided YBCO films. The measured results show that the filter has 0.15 dB insertion loss at the ...