Broadband distributed filter for supercoducting nanobolometers
A. F. Kuzmin, O. V. Koryukin, S. V. Shitov, A. G. Kovalenko
Kotel'nikov Institute of Radio-engineering and
Electronics of RAS
Received February 16, 2011
report the developed concept, fabrication technology and experimental studies
of the new distributed broadband low-pass filter for cryogenic nanobolometers
with the bandwidth 0.1
- 20 GHz based on a combination of an integral thin-film capacitor with damping
transmission line based on a manganine twisted pair. Attenuation reached 50 dB
at 1 GHz and 80 dB at 20 GHz, which is the same as in the best world analogues,
but fabrication is more simple and repeatable when using technology cycle that
is compatible with the technology of cryogenic nanobolometers.
Key words: cryogenic filter, superconducting bolometer, thin-film capacitor.