Title :
An HTS end-coupled CPW filter at 35 GHz
Author :
Swanson, D.G., Jr. ; Forse, R.J.
Author_Institution :
Watkins-Johnson Co., Palo Alto, CA, USA
Abstract :
Using conventional thin-film metalization schemes, the lower limit on practical filter bandwidths is set by the loss of the metalization system. Using HTS technology, we are no longer limited by conductor loss; the new limit is the geometry of the coupling structure between resonators. The limitations of the more conventional capacitive coupled open circuited resonator topologies can be overcome by switching to an inductive coupling scheme between short circuited resonators. This new approach has been tested and proven by fabricating a five resonator, 35 GHz CPW filter that is highly compatible with HTS technology.<>
Keywords :
high-temperature superconductors; metallisation; microstrip components; microwave filters; passive filters; resonators; superconducting microwave devices; superconducting thin films; 35 GHz; EHF; HTS end-coupled CPW filter; HTSC technology; MM-wave filters; inductive coupling scheme; short circuited resonators; Bandwidth; Circuit topology; Conductors; Coplanar waveguides; Coupling circuits; Geometry; High temperature superconductors; Resonator filters; Switching circuits; Transistors;
Conference_Titel :
Microwave Symposium Digest, 1994., IEEE MTT-S International
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-1778-5
DOI :
10.1109/MWSYM.1994.335336
