Junkosha Microwave/mmWave Coaxial Cable Assembly

8 series - VNA Test Assembly [Official launch in December 2021]

Junkosha’s new mmWave VNA Test Cable Assembly exhibits excellent phase (within +/- 4.5˚ at 50 GHz), and amplitude (within +/- 0.08 dB at 50 GHz) stability in flexure alongside strong phase stability in temperature through its 50 GHz bandwidth, available with NMD connector.
The assembly also displays impressive performance durability, surpassing 50,000 tick tock cycles during testing. The cable is bent 180˚ on a 2.25” radius mandrel with ease, demonstrating superior flexibility and no spring back. A ruggedized port side NMD connector is also available to ensure reliable connections to the VNA.


- The highest precision
- Guaranteed Phase & Amplitude stability
- Ruggedized NMD connectors available


- Vector network analyzers
- Calibration
- The highest accuracy measurement


Cable Type25”38”
Electrical PropertiesMaximum Operating Frequency (GHz)50
Characteristic Impedance Nom. (Ω)50
Maximum Phase Stability (degree @50 GHz)4.59.0
Maximum Amplitude Stability (dB @50 GHz)0.080.15
Nominal Velocity of Propagation (%)79
Typical Insertion loss (dB @50 GHz)3.65.1
Maximum Insertion loss (dB @50 GHz)4.56.2
Typical VSWR1.43:1
Shielding Effectiveness to 18GHz (dB)> 90
MechanicalCable Outer Diameter [ in (mm) ]0.56 (14.2)
Minimum Bending Radius [ in (mm) ]2.25 (57)
Typical Cable Mass [ oz/ft (g/m) ]4.63 (430)
Operating Temperature Range (°C)23+/-5°
Tyipical Phase Stabillty in Flexure
Test condition
Sample length: 635 mm.
Bend condition
1) Initial straight shape
2) Bent 180° 114 mm mandrel
3) Back to the straight shape again
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