Title :
Design and performance of a high-Tc superconductor coplanar waveguide filter
Author :
Chew, Wilbert ; Riley, A. Landis ; Rascoe, Daniel L. ; Hunt, Brian D. ; Foote, Marc C. ; Cooley, Thomas W. ; Bajuk, Louis J.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
fDate :
9/1/1991 12:00:00 AM
Abstract :
The design of a coplanar waveguide low-pass filter made of YBa2Cu3O7-δ (YBCO) on an LaAlO 3 substrate is described. Measurements were incorporated into simple models for microwave CAD analysis to develop a final design. The patterned and packaged coplanar waveguide low-pass filter of YBCO, with dimensions suited for integrated circuits, exhibited measured insertion losses when cooled in liquid nitrogen superior to those of a similarly cooled 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; low-pass filters; microwave filters; passive filters; superconducting devices; waveguide components; yttrium compounds; 0 to 9.5 GHz; CPW; LaAlO3 substrate; YBa2Cu3O7-δ; coplanar waveguide filter; high temperature superconductors; high-Tc superconductor; insertion losses; low-pass filter; microwave CAD analysis; models; performance; Coplanar waveguides; Design automation; Integrated circuit measurements; Loss measurement; Low pass filters; Microwave filters; Microwave measurements; Substrates; Thin film circuits; Yttrium barium copper oxide;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
