Semi rigid cables for cryogenic applications - LTEQ MICROWAVE

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Semi rigid cables for cryogenic applications

Cryogenic Components
Semi-Rigid Cables for Cryogenic (Super Low Temperature) Applications


  
We offer wide variety of superconducting  semi-rigid coaxial cables for cryogenic applications,  from which you  can select based on such features as heat conductivity,  flexibility,  insertion loss, permeability, or thickness to meet your specific   requirements.
They are low in heat conductivity,  minimizing inflow of the heat from the high-temperature end.

Frequency : DC-40GHz (DC-65GHz upon request).
Impedance is 50Ω

with or without connectors


Specifications and Model No. - Table 1

 

Characteristics

Model

Number

 

Outer diameter

φ

Heat quantity μw/k

note*1

Insertion Loss dB/m at 10GHz

4K-20K

4K-100K

300K

110K

77K

20K

4K

Minimum heat conduction

 

ULT-01

2.2mmφ

(0.085")

 

35

 

167

 

5.32

 

4.07

 

3.85

 

2.49

 

2.39

Flexible and low heat conduction

ULT-02

2.2mmφ

(0.085")

 

60

 

177

 

4.65

 

3.67

 

3.26

 

2.85

 

2.75

Minimum insertion loss

ULT-03

2.2mmφ

(0.085")

 

84

 

350

 

2.69

 

2.06

 

1.7

 

1.2

 

1.14

Non-magnetic

ULT-04

2.2mmφ

(0.085")

 

146

 

493

 

2.87

 

2.29

 

1.96

 

1.47

 

1.47

Low heat conduction and

low insertion loss

ULT-05

2.2mmφ

(0.085")

 

65

 

196

 

2.60

 

2.25

 

1.85

 

1.31

 

1.24

Thin

ULT-10

1.19mmφ

50

170

4.40

3.50

3.03

2.60

2.45

Very Thin

ULT-20

0.86mmφ

28

94

6.58

4.33

4.11

2.75

2.65

Ultra Thin

ULT-30

0.33mmφ

1.6

4.6

72

56

51

44

42

 

(General example: Cupronickel) Note that Insertion loss is larger.

 

Characteristics

 

Model

Number

Outer diameter φ

Heat quantity μw/k note*1

Insertion Loss dB/m at 10GHz

 

4K-20K

 

4K-100K

 

300K

 

110K

 

77K

 

20K

 

4K

Larger insertion loss

 

 

0.085"

 

52

 

229

 

10.10

 

9.56

 

9.43

 

9.37

 

8.5

 

note*1 : 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.

 

Specifications and Model No. - Table 2

 

Model Number

 

Minimum

bending radius mm

(to the center of cables)

Standard Insertion Loss dB/m(25°C)

 

Material

Available connector

1GHz

10GHz

20GHz

40GHz

Inner conductor

 

Outer conductor

ULT-01

12

1.64

5.32

6.98

11.17

SBC

SUS304

SMA, APC2.9, APC2.4, APC1.85

ULT-02

8

1.87

6.05

9.56

12.71

SBS

SUS304

 

ULT-03

12

0.82

2.69

3.49

5.65

SBC

Cu70μm+SUS304

ULT-04

10

1.205

2.87

5.0

6.03

SBS

BS

 

ULT-05

12

0.90

2.80

4.60

7.30

SBS

Cu5μm+SUS304

ULT-10

6.5

1.40

4.70

6.80

9.87

SBC

SBC

SMA, MMCX, GPO

ULT-20

3.2

2.0

6.58

9.44

14.5

BC

BC

ULT-30

1.5

21.1

66.9

94.7

140.5

SUS304

SUS304


 

(Example: Cupronickel)

Model

Number

Minimum bending radius mm

 (to the center of cables)

Standard Insertion Loss dB/m(25°C)

Material

 

1GHz

 

10GHz

 

20GHz

 

40GHz

Inner conductor

Outer conductor

-

12

3.1

10.1

14.2

21.2

Cupronickel

Cupronickel

 

SBC: Silver plated beryllium copper (plate thickness 2.5 μm) SPC: Silver plated annealed copper wire

SBS: Silver plated brass (plate thickness 3.5 μm) BC: Beryllium copper

 

Order model example

ULT-03-SMA(M)SMA(F)-0500

Cable type – connector name – Connector phase front length (mm)

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