Title :
HTS hairpin microstrip filter on r-cut sapphire substrate
Author :
Aiga, Fumihiko ; Fuke, Hiroyuki ; Terashima, Yoshiaki ; Yamazaki, Mutsuki ; Kayano, Hiroyuki ; Hashimoto, Tatsunori
Author_Institution :
Corporate Res. & Dev. Center, Toshiba Corp., Kawasaki, Japan
fDate :
6/1/2003 12:00:00 AM
Abstract :
We have developed a 17-pole high-temperature superconductor thin-film hairpin microstrip filter on r-cut sapphire substrate. We determined the optimum orientation of hairpin resonators on r-cut sapphire substrates, considering the anisotropy of dielectric permittivity. With optimum orientation, the desired frequency response was realized. On the other hand, when the orientation was not the optimum, the frequency response was violently disturbed. The cause of the disturbance of the frequency response was investigated.
Keywords :
high-temperature superconductors; microstrip filters; microstrip resonators; permittivity; resonator filters; sapphire; substrates; superconducting filters; superconducting microwave devices; superconducting resonators; superconducting thin films; Al2O3; dielectric permittivity anisotropy; frequency response; hairpin resonator; high temperature superconductor thin film; multi-pole microstrip filter; r-cut sapphire substrate orientation; Anisotropic magnetoresistance; Dielectric substrates; Dielectric thin films; Frequency response; High temperature superconductors; Microstrip filters; Permittivity; Resonator filters; Superconducting filters; Superconducting thin films;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2003.813711
