Title :
Switched YBa2Cu3O7 lumped element bandstop filter
Author :
Avenhaus, B. ; Porch, A. ; Huang, F. ; Lancaster, M.J. ; Woodall, P. ; Wellhöfer, F.
Author_Institution :
Sch. of Electron. & Electr. Eng., Birmingham Univ., UK
fDate :
6/8/1995 12:00:00 AM
Abstract :
The switching capability of a simple high temperature superconducting (HTS) lumped element bandstop filter is demonstrated. A bias current of the order of the critical current of the HTS material is necessary to switch the filter response from high to low attenuation at the stop-band frequency. A simple theoretical model to describe the ON and OFF states is presented. First measurements of the response time to a pulsed bias current show that the switching time is <2 μs
Keywords :
band-stop filters; barium compounds; high-temperature superconductors; lumped parameter networks; microwave filters; superconducting microwave devices; superconducting switches; switched filters; yttrium compounds; 2 mus; YBa2Cu3O7; attenuation; critical current; high temperature superconductor; pulsed bias current; response time; switched YBa2Cu3O7 lumped element bandstop filter;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19950697
