Junkosha Inc.EMF-00 / 0 Series

Microwave & mmWave
Cable Assemblies

High phase stability against bending and temperature fluctuation. Seven frequency options from 26.5 GHz to 145 GHz. The standard for precision VNA measurements.

Junkosha 0 Series RF Cable Assembly
145 GHz
Maximum Frequency
7
Cable Variants
50 Ohm
Characteristic Impedance
-30 to +85 C
Operating Temperature

Phase Stability You Can Measure

The 0 Series cable assemblies offer exceptional phase stability against temperature fluctuations and bending. They are the industry benchmark for connecting to vector network analyzers (VNA) for precision measurement.

Cables are available in a wide range of frequencies: 26.5, 50, 67, 70, 110, 120 and 145 GHz with various connector options. All variants share the same 50 Ohm impedance, -30 to +85 C operating range, and are RoHS compliant.

  • Superior phase stability under bending and temperature change
  • Seven frequency variants up to 145 GHz
  • 50 Ohm characteristic impedance across all variants
  • Velocity of propagation 74 to 79%
  • Armored and non-armored configurations available
  • Ships in 11 business days (15 for mm-wave variants)
  • RoHS compliant - all variants

Cable Construction

1
Center Conductorinnermost
Silver Plated Copper
2
Dielectric
Low Density PTFE
3
1st Outer Conductor
Silver Plated Copper Tape
4
2nd Outer Conductor
Silver Plated Copper Braid
5
Sheath
Fluoropolymer
6
Armored Layer
SUS Spiral Tube
7
Braid
Silver Plated Copper Braid
8
Outer Sheathoutermost
Polyester Fiber

Cable Photography

Junkosha MWX021 cable assembly
MWX02126.5 GHz — SMA / 3.5 mm
Junkosha MWX051 cable assembly
MWX05150 GHz — 2.4 mm / 2.92 mm
Junkosha MWX001 cable assembly
MWX001110 GHz — 1.0 mm Safety-Lock

7 Frequency Options

Select the variant that best matches your frequency and size requirements. Larger OD means lower insertion loss and higher power rating. Smaller OD means higher frequency support and better flexibility.

MWX02126.5 GHz
Outer Diameter8.5 mm
Cable Mass122 g/m
VSWR (typ.)1.33
Insertion Loss2.0 dB/m
Propagation Delay4.21 ns/m
Velocity of Prop.79%
Min. Bend Radius30 mm
Assembly Length700 - 1,500 mm
Connector: 3.5 mm / SMA
MWX05150.0 GHz
Outer Diameter6.6 mm
Cable Mass76 g/m
VSWR (typ.)1.46
Insertion Loss4.6 dB/m
Propagation Delay4.19 ns/m
Velocity of Prop.79%
Min. Bend Radius30 mm
Assembly Length700 - 1,500 mm
Connector: 2.4 mm / 2.92 mm
MWX06167.0 GHz
Outer Diameter6.6 mm
Cable Mass73 g/m
VSWR (typ.)1.46
Insertion Loss7.3 dB/m
Propagation Delay4.35 ns/m
Velocity of Prop.77%
Min. Bend Radius30 mm
Assembly Length700 - 1,500 mm
Connector: 1.85 mm
MWX07170.0 GHz
Outer Diameter6.6 mm
Cable Mass73 g/m
VSWR (typ.)1.46
Insertion Loss7.5 dB/m
Propagation Delay4.35 ns/m
Velocity of Prop.77%
Min. Bend Radius30 mm
Assembly Length700 - 1,500 mm
Connector: 1.85 mm
MWX001110.0 GHz
Outer Diameter4.0 mm
Cable Mass50 g/m
VSWR (typ.)1.43
Insertion Loss11.8 dB/m
Propagation Delay4.2 ns/m
Velocity of Prop.79%
Min. Bend Radius15 mm
Assembly Length100 - 200 mm
Connector: 1.0 mm Safety-Lock
MWX002120.0 GHz
Outer Diameter4.0 mm
Cable Mass50 g/m
VSWR (typ.)1.43
Insertion Loss14.5 dB/m
Propagation Delay4.2 ns/m
Velocity of Prop.79%
Min. Bend Radius15 mm
Assembly Length100 - 200 mm
Connector: 1.0 mm
MWX004145.0 GHz
Outer Diameter4.0 mm
Cable Mass50 g/m
VSWR (typ.)1.50
Insertion Loss28.1 dB/m
Propagation Delay4.5 ns/m
Velocity of Prop.74%
Min. Bend Radius20 mm
Assembly Length100 - 200 mm
Connector: 0.8 mm Safety-Lock

Technical Comparison

All specifications are typical values at 25 C and sea level. RoHS compliant. Characteristic impedance 50 Ohm on all variants.

ModelMax Freq.ODMassVSWRIns. LossProp. DelayVel. of Prop.Min. Bend R.Length Range
MWX02126.5 GHz8.5 mm122 g/m1.332.0 dB/m4.21 ns/m79%30 mm700 - 1,500 mm
MWX05150.0 GHz6.6 mm76 g/m1.464.6 dB/m4.19 ns/m79%30 mm700 - 1,500 mm
MWX06167.0 GHz6.6 mm73 g/m1.467.3 dB/m4.35 ns/m77%30 mm700 - 1,500 mm
MWX07170.0 GHz6.6 mm73 g/m1.467.5 dB/m4.35 ns/m77%30 mm700 - 1,500 mm
MWX001110.0 GHz4.0 mm50 g/m1.4311.8 dB/m4.2 ns/m79%15 mm100 - 200 mm
MWX002120.0 GHz4.0 mm50 g/m1.4314.5 dB/m4.2 ns/m79%15 mm100 - 200 mm
MWX004145.0 GHz4.0 mm50 g/m1.5028.1 dB/m4.5 ns/m74%20 mm100 - 200 mm

* The above specifications are typical measured values for reference. Assembly length tolerance: +/- 10 mm for lengths up to 1,000 mm.

Simple Criteria for Cable Selection

All 0 Series cables share the same construction - the key differentiator is outer diameter.

Down

Lower Insertion Loss

Choose a larger outer diameter cable

Up

Higher Frequency

Choose a smaller outer diameter cable

W

Higher Power Rating

Choose a larger outer diameter cable

Flex

More Flexibility

Choose a smaller outer diameter cable

The EMF Series Family

The full EMF product family covers RF and microwave cable assemblies for every test and measurement application.

Ready to order or need technical advice?

Koto Electronics is the authorized Israeli representative of Junkosha Inc. Contact us for pricing, availability, and custom specifications.