Title :
Hairpin-comb filters for HTS and other narrow-band applications
Author :
Matthaei, George L. ; Fenzi, Neal O. ; Forse, Roger J. ; Rohfing, S.M.
Author_Institution :
Superconductor Technol. Inc., Santa Barbara, CA, USA
fDate :
8/1/1997 12:00:00 AM
Abstract :
The folded half-wavelength resonators in hairpin-comb filters all have the same orientation, whereas the orientations of the resonators in conventional hairpin-filters alternates. Hairpin-comb filters are shown to have attractive properties for design of compact, narrow-band filters such as are often desired for high-temperature-superconductivity (HTS) and other applications. The results obtained from two- and four-resonator trial HTS-filter designs are discussed. The filters are seen to have very strong stopbands, and their computed and measured performance are found to be in very good agreement
Keywords :
UHF filters; band-pass filters; high-temperature superconductors; microstrip filters; microwave filters; passive filters; resonator filters; superconducting microwave devices; superconducting resonators; HTS filter designs; folded half-wavelength resonators; hairpin-comb filters; high-temperature-superconductivity; narrow-band applications; Band pass filters; Bandwidth; Coupling circuits; Dielectric substrates; High temperature superconductors; Microstrip filters; Narrowband; Resonator filters; Stripline; Superconducting filters;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
