STQ-CW-KFKF025-F1

Rev. 1.0

Description:
Model STQ-CW-KFKF025-F1 is a 25” long, costeffective, instrumentation grade, flexible, armoredcoaxial cable with a 2.92 mm NMD female and a 2.92mm female connector that covers the frequency
range of DC to 40 GHz. The cable is especiallydesigned and manufactured for VNA applications
with greater than 10,000 connections. The typical
amplitude and phase stabilities at 40 GHz are ± 0.05 dB and ± 2.5° at a bending radius of 4.9",
respectively. The coaxial cable utilizes the highest quality test instrumentation grade cable and a
precision manufacturing process to guarantee superior microwave performance and mechanicaldurability. The impedance of the cable is 50 ohms. This model and other models, such as STQ-CWKFKM025-F1, may form a VNA test cable pair for custom test set applications. Other connector typecombinations and lengths are offered under different models.

Features:•••••

Applications:••High PerformanceArmored
Flexible
Stable and Reliable
Greater than 10,000 Connections

Test LabVNA

SAGE Millimeter, Inc.

2.92 mm NMD (F) to 2.92 mm (F) Armored VNA Test Cable, Flexible, 25”

Electrical Specifications:Parameter
Frequency

Condition

MinimumDC

DC to 20 GHz
20 to 30 GHz
30 to 40 GHz

Insertion Loss
Return Loss
Phase Stability*
Amplitude Stability*
Impedance
Breakdown Voltage
Radiation Shielding
Specification Temperature
Operating Temperature

TypicalMaximum
40 GHz2.0 dB
2.2 dB
2.8 dB
17 dB± 2.5°± 0.05 dB
50 Ω
500 Volts
90 dB+25 °C-40 °C+85 °C*When wrapped (360°) around a 4.9" (124.5 mm) radius mandrel.

www.sagemillimeter.com | 3043 Kashiwa Street, Torrance, CA 90505
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: sales@sagemillimeter.com
Copyright © 2019 by SAGE Millimeter, Inc.

Page | 1

STQ-CW-KFKF025-F1

Rev. 1.0

Mechanical Specifications:
ItemConnector 1Connector 2
Minimum One-Time Bending Radius
Minimum Repeated Bending RadiusConnections
Connector Contact Material/Plating
Connector / Cable Insulation Layer Material
Inner/Outer Cable Jacket Material
Cable Outer Diameter
LengthOutline

Specification
2.92 mm NMD Female
2.92 mm Female
2.36"
4.9"
>10,000Beryllium Copper (BeCu)/Gold Plating Per MIL-G-45204
Passivated Stainless Steel / PEI
FEP/Stainless Steel Braid and Nylon
0.598"25”
CW-KK-F8-V

Typical Performance vs. Frequency
00-10

Insertion Loss (dB)

-5Insertion Loss-10

Return Loss

-15-15-20-20-25-25-30-30-35-35-40-40-45-45-50

Return Loss (dB)

-5SAGE Millimeter, Inc.

2.92 mm NMD (F) to 2.92 mm (F) Armored VNA Test Cable, Flexible, 25”-500510152025303540Frequency (GHz)www.sagemillimeter.com | 3043 Kashiwa Street, Torrance, CA 90505
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: sales@sagemillimeter.com
Copyright © 2019 by SAGE Millimeter, Inc.

Page | 2STQ-CW-KFKF025-F1

Rev. 1.0

Typical Phase Stability vs. Frequency
108Phase Stability

6Phase Stability (Degrees)

420-2-4-6-8-10051015

2025

303540Frequency (GHz)

SAGE Millimeter, Inc.

2.92 mm NMD (F) to 2.92 mm (F) Armored VNA Test Cable, Flexible, 25”

Typical Amplitude Stability vs. Frequency
0.25
0.2
Amplitude Stability

Amplitude Stability (dB)

0.15
0.1
0.05
0-0.05-0.1-0.15-0.2-0.25
0510152025303540

Frequency (GHz)www.sagemillimeter.com | 3043 Kashiwa Street, Torrance, CA 90505
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: sales@sagemillimeter.com
Copyright © 2019 by SAGE Millimeter, Inc.

Page | 3

STQ-CW-KFKF025-F1

Rev. 1.0

Mechanical Outline: (Unless otherwise specified, all dimensions are in inches [millimeters])

Note:• All data presented is collected from a sample lot. Actual data may vary unit to unit, slightly.
• All testing was performed under +25 °C case temperature.
• SAGE Millimeter, Inc. reserves the right to change the information presented without notice.
Caution:• Bending the cable sharply will either cause damage or degrade the performance of the cable
permanently.
• Proper torque, 8.0 ± 0.15 inch-pounds (0.90 ± 0.02 Nm), should be applied. SAGE Millimeter
torque wrench, model SCH-08008-U2, is highly recommended.

SAGE Millimeter, Inc.

2.92 mm NMD (F) to 2.92 mm (F) Armored VNA Test Cable, Flexible, 25”

www.sagemillimeter.com | 3043 Kashiwa Street, Torrance, CA 90505
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: sales@sagemillimeter.com
Copyright © 2019 by SAGE Millimeter, Inc.

Page | 4