Title :
High-T/sub c/ superconducting coplanar waveguide filter
Author :
Chew, Wilbert ; Bajuk, Louis J. ; Cooley, Thomas W. ; Foote, Marc C. ; Hunt, Brian D. ; Rascoe, Daniel L. ; Riley, A. Landis
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
fDate :
5/1/1991 12:00:00 AM
Abstract :
Coplanar waveguide (CPW) low-pass filters made of YBa/sub 2/Cu/sub 3/O/sub 7- delta / (YBCO) on LaAlO/sub 3/ substrates, with dimensions suited for integrated circuits, were fabricated and packaged. A complete filter gives a true idea of the advantages and difficulties in replacing thin-film metal with a high-temperature superconductor in a practical circuit. Measured insertion losses in liquid nitrogen were superior to the loss of a similar thin-film copper filter throughout the 0- to 9.5-GHz passband. These results demonstrate the performance of fully patterned YBCO in a practical CPW structure after sealing in a hermetic package.<>
Keywords :
MMIC; barium compounds; high-temperature superconductors; lanthanum compounds; low-pass filters; microwave filters; passive filters; substrates; superconducting devices; waveguide components; yttrium compounds; 0 to 9.5 GHz; 77 K; 9.5 GHz; CPW filters; LaAlO/sub 3/ substrates; SHF; YBCO; YBa/sub 2/Cu/sub 3/O/sub 7- delta /; hermetic package; high temperature superconductors; high-Tc superconductors; insertion losses; integrated circuits; low-pass filters; performance; superconducting coplanar waveguide filter; Coplanar waveguides; High temperature superconductors; Integrated circuit packaging; Loss measurement; Low pass filters; Substrates; Superconducting filters; Superconducting thin films; Thin film circuits; Yttrium barium copper oxide;
Journal_Title :
Electron Device Letters, IEEE
