KEYCOM provides solutions in the 300 GHz to 1 μHz frequency range (SHF/EHF/MW/UHF/VHF/ULF).
We undertake designing, manufacturing and measuring. Please feel free to contact us.

Superconducting Coaxial Cable Assemblies
(0. 085" type Nb-Nb Superconducting Coaxial Cable Assemblies)

Model No. UPJ06

Cryogenic superconducting coaxial cable assembly with niobium conductor,
recognized by research institutions all over the world.

【Related Contents】
👉 Cryogenic Products Line-up
👉 Bias-Tee for Cryogenic

Features

Operating frequency is available up tp 66GHz.
Minimum bend radius: 30mm

Charts

* Measurements were taken with 1 m lead cables on both input/ output ends.
* Measurements were taken after superconducting coaxial cables became completely super conductive.

Variation of insertion loss with frequency(4K,10mK)

This is an extract of a part of the ETH Zürich's paper on measurement results using KEYCOM products(Page 9 of 15).
Source: Philipp Kurpiers, Theodore Walter,Paul Magnard,Yves Salathe and Andreas Wallraff
Department of Physics,ETH Zürich, Zürich,CH-8093,Switzerland
"Characterizing the attenuation of coaxial and rectangular microwave-frequency waveguides at cryogenic temperatures"  

Pulse transmission characteristics of 10m superconducting delay line (including the lead part)

*In superconducting state

Main specifications

Part No. Max. frequency(GHz) External conductor Dielectric Internal conductor Heat Quantity
(μw/k)*
Min. Bending Radius
(mm)
Available Connectors
NbNb085 66GHz Outer Diameter
(mm)
Material Outer Diameter
(mm)
Material Outer Diameter
(mm)
Material 4K-20K
2.20 Nb 1.62 Foamed
PTFE
0.51 Nb 3.3 70.0 SMA, APC2.9,
APC2.4, APC1.85
*Heat quantity required for one end of 10 cm long cable (excluding connectors) to reach 20 K or 100 K when 4 K heat anchor is applied to the other end of the cable.

Connector type SMA 2.9mm(K) 2.4mm 1.8mm(V)
Max. frequency(GHz) 18.5 40 or (46) 50 60 or (65)

Part No.

NbNb085A - K(m)K(f) - 1000
Cable type Connector name Connector phase front length (mm)
max. 1000mm
0.085" type
Applicable connectors - SMA, APC2.9(k), APC2.4, V
A crimping connection is standard.