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Chinese Physics B

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

Di Wu, Bin Wei, Xilong Lu, Xinxiang Lu, Xubo Guo, Bisong Cao

Published Jun 1, 2018• 1 citation
Publisher

Abstract

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.

DOI
10.1088/1674-1056/27/6/068503

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