A Compact Dual-Band Bandpass Superconducting Filter Using Microstrip/CPW Spiral Resonators

Author

Zhan Xu ; Bin Wei ; Bisong Cao ; Xubo Guo ; Xiaoping Zhang ; Yong Heng ; Linan Jiang ; Tianning Zheng ; Jingchen Wang

Author_Institution

Dept. of Phys., State Key Lab. of Low-Dimensional Quantum Phys., Tsinghua Univ., Beijing, China

Volume

23

Issue

11

fYear

2013

fDate

Nov. 2013

Firstpage

584

Lastpage

586

Abstract

A compact eight-pole dual-band bandpass filter is designed using a combination of microstrip and coplanar waveguide spiral resonators. To implement a coupling matrix with both large and small elements, four coupling paths are used to apply coupling coefficients varying from 0.001 to 0.3. The fabricated superconducting filter exhibits high performance and excellent agreement with simulations.

Keywords

band-pass filters; barium compounds; coplanar waveguides; high-temperature superconductors; magnesium compounds; microstrip resonators; microwave devices; superconducting filters; yttrium compounds; HTS; MgO substrate; YBCO films; YBa₂Cu₃O₇; bandpass filter; broadside-coupled microstrip; compact dual-band BPF; coplanar waveguide; coupling matrix; eight-pole dual-band filter; high-temperature superconducting materials; magnesium oxide; microstrip spiral resonators; multi-band microwave devices; superconducting filters; yttrium barium copper oxide; Coplanar waveguides; Couplings; Dual band; Microstrip resonators; Transmission line matrix methods; Bandpass filters (BPFs); dual-band; superconducting filters;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2013.2281433

Filename

6606891