DocumentCode :
655806
Title :
High-sensitivity HTS receiver module with hermetic thermal insulation waveguides
Author :
Kawaguchi, Tatsuki ; Shiokawa, N. ; Nakayama, Keisuke ; Yamazaki, M. ; Kayano, H. ; Takahashi, Hiroki ; Gomi, Koichiro ; Abe, Bunichiro
Author_Institution :
Corp. R&D Center, Toshiba Corp., Kawasaki, Japan
fYear :
2013
fDate :
6-10 Oct. 2013
Firstpage :
955
Lastpage :
958
Abstract :
We have proposed a high-sensitivity high-Tc superconducting (HTS) receiver module with hermetic thermal insulation waveguides. The hermetic thermal insulation waveguide consists of two silver-plated aluminum oxide waveguides and copper wall. The waveguide with a gap between the aluminum oxide waveguides realizes thermal insulation between room temperature and low temperature. And the hermetic waveguide is connected to a vacuum flange to seal the vacuum chamber. This waveguide operates in the 3 GHz band and the dimension of this wavegide is 6.9 × 26.1 mm, one-third of the size of a conventional hollow metallic waveguide. The waveguide realizes an insertion loss of 0.4 dB and thermal conductivity 1/10 that of 2.2φ semi-rigid coaxial copper cable. The HTS receiver module is composed of the developed waveguides, an HTS filter, a cryogenic low-noise amplifier (LNA), and a limiter. The HTS receiver module realized low thermal noise of 60 K.
Keywords :
high-temperature superconductors; low noise amplifiers; thermal conductivity; thermal noise; waveguides; HTS filter; LNA; conventional hollow metallic waveguide; copper wall; cryogenic low-noise amplifier; frequency 3 GHz; hermetic thermal insulation waveguide; high-Tc superconducting receiver; high-sensitivity HTS receiver module; insertion loss; silver-plated aluminum oxide waveguide; temperature 60 K; thermal conductivity; thermal noise; vacuum chamber; vacuum flange; Aluminum oxide; Dielectrics; High-temperature superconductors; Microwave filters; Receivers; Rectangular waveguides; Aluminum oxide dielectric rectangular column; HTS receiver module; Low-noise amplifier; Rectangular waveguide; Thermal insulation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave Conference (EuMC), 2013 European
Conference_Location :
Nuremberg
Type :
conf
Filename :
6686817
Link To Document :
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