Compact high-order quint-band superconducting band-pass filter

• 来源期刊: 中国物理B（英文版）
• 关键词: high-temperature superconducting bandpass filter multi-band quint-band filter
• 年，卷（期）: 2018,（6）
• 页码范围: 516-521
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/1674-1056/27/6/068503

摘要

In this paper,we present a compact quint-band superconducting filter operating at 2.4,3.5,4.7,5.3,and 5.9 GHz.Matching junctions with different impedance branch lines are used to connect a dual-band sub-filter with a tri-band sub-filter and to reduce the channel interactions.The quint-band filter design is divided into two sections to determine the controllable frequencies and bandwidths,while ensuring compact size and reducing design complexity.The filter is fabricated on double-sided YBCO film deposited on an MgO substrate with a size of 26 mm× 19 mm.The measured results match well with the simulations.