Title :
A coplanar waveguide filter using thin-film high temperature superconductor
Author :
Chew, W. ; Bajuk, L.J. ; Cooley, T.W. ; Foote, M.C. ; Hunt, B.D. ; Rascoe, D.L. ; Riley, A.L.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
The design of a coplanar waveguide low-pass filter mode of high-critical-temperature superconducting YBCO film on a LaAlO/sub 3/ substrate is described. The patterned and packaged coplanar waveguide low-pass filter of YBCO exhibited measured insertion losses in liquid nitrogen superior to the loss of similar thin-film copper filter throughout the 0-to-9.5-GHz passband. Coplanar waveguide models for use with thin-film normal metal (with thickness either greater or less than the skin depth) and YBCO are discussed and used to compare the losses of the measured YBCO and copper circuits.<>
Keywords :
barium compounds; high-temperature superconductors; losses; low-pass filters; microwave filters; passive filters; superconducting thin films; waveguide components; yttrium compounds; 0 to 9.5 GHz; CPW; LaAlO/sub 3/ substrate; YBaCuO-LaAlO/sub 3/; coplanar waveguide filter; high temperature superconductor; insertion losses; liquid nitrogen; losses; low-pass filter; thin-film; Coplanar waveguides; Loss measurement; Low pass filters; Superconducting films; Superconducting filters; Superconducting thin films; Temperature; Thin film circuits; Transistors; Yttrium barium copper oxide;
Conference_Titel :
Microwave Symposium Digest, 1991., IEEE MTT-S International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-87942-591-1
DOI :
10.1109/MWSYM.1991.147272
