Title :
Third-order intermodulation measurements of microstrip bandpass filters based on high-temperature superconductors
Author :
Sato, H. ; Kurian, J. ; Naito, M.
Author_Institution :
NTT Basic Res. Labs., Kanagawa, Japan
Abstract :
The insufficient power-handling capability of high-temperature superconducting microwave filters has been a serious barrier to their application. To clarify the key parameters for improving the power-handling capability of rf filters based on high-temperature superconductors with microstrip structures, we synthesized bandpass filters with different layouts using several kinds of thin film high-temperature superconductors, and performed third-order intermodulation measurements on them. The experimental results indicate that increasing the film thickness and utilizing MBE-grown films of NdBa2Cu3O7 films are effective in obtaining microstrip filters with high power-handling capability.
Keywords :
Chebyshev filters; band-pass filters; barium compounds; high-temperature superconductors; intermodulation measurement; microstrip filters; microwave filters; neodymium compounds; passive filters; superconducting filters; superconducting thin films; MBE grown films; NdBa2Cu3O7; NdBa2Cu3O7 films; high temperature superconducting microwave filters; microstrip bandpass filters; microstrip filters; microstrip structures; molecular beam epitaxy; power handling capability; rf filters; third order intermodulation measurements; Band pass filters; High temperature superconductors; Microstrip filters; Microwave filters; Molecular beam epitaxial growth; Performance evaluation; Superconducting films; Superconducting filters; Superconducting microwave devices; Superconducting thin films;
Conference_Titel :
Microwave Symposium Digest, 2004 IEEE MTT-S International
Print_ISBN :
0-7803-8331-1
DOI :
10.1109/MWSYM.2004.1339179
