Title :
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
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;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2013.2281433
