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" / 0.047" / 0.034" type NbTi-NbTi Superconducting Coaxial Cables)

Model No. UPJ07
Feature

Superconduction coxial cable for cryogenic and strong electromagnetic field,
recognized by research institutions all over the world.

Highly effective at thermal gradient below 4K.

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

Acknowledgements

EPJ Quantum Technology, 04 May 2017

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"


※Evaluation of Keycom's NbTi Superconducting Coaxial Cables and actual measurement result of temperature/frequency/strong magnetic field - characteristics of attenuation amount are reported in the paper.

Nature Vol. 398, No. 6730, pp.786 - 788, 29 April 1999

Y. Nakamura*, Yu. A. Pashkin & J. S. Tsai
NEC Fundamental Research Laboratories, CREST, Japan Science and Technology Corporation (JST)
"Coherent control of macroscopic quantum states in a single-Cooper-pair box"


※Keycom's Superconducting Coaxial Cables, Cryogenic Coaxial Cables, Cryogenic printed boards are used.

Materal Characterstics

w/cmk at 1K(1) dB/m at 10GHz,4K(2) effect(1)*(2)
Cu 0.15 1 0.15
Ag 1 1.1 1.1
Bs:Cu65% 0.007 1.47 0.010
(non-magnetic)
SUS304 0.0015(ULT05) 1.14 0.002
Nb 0.1 0.8 0.08
(non-magnetic)
NbTi:Nb47% 0.0003 1.0 0.0003
PTFE 0.000035
*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 above on measurement results using KEYCOM products(Page 9 of 15).

Pulse propagation property of 10m NbTi-NbTi 085 at 4K including short length extension cable at room temperature


Specification

Part Number

Max. Frequency

(GHz)

Outter Conductor Dielectric Inner Conductor Heat Quantity (μw/k)*

Min. Bending Radius

(mm)

Available Connectors

Diameter

(mm)

Material

Diameter

(mm)

Material

Diameter

(mm)

Material 4K-20K
NbTiNbTi085
66GHz
2.20

NbTi
1.62

PTFE
0.51

NbTi
0.3
30.0
SMA, APC2.9, APC2.4, APC1.85, GPPO
NbTiNbTi047
119GHz
1.19
0.94
0.29
0.09
10.0

NbTiNbTi034

170GHz
0.86
0.66
0.20
0.06
8.0

*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) GPO(SMP) GPPO(SMPM)
Max. operating frequency (GHz) 18.5 40 or (46) 50 60 or (65) 40 60 or (65)

 

Order model example

NbTiNbTi085A - K(m)K(f) - 1000
Cable type Connector name Connector phase front length (mm)
max. 1000mm
0.085" type
Applicable connectors SMA, APC2.9, APC2.4, APC1.85
A crimping connection is standard.

Pictures