Phase Stability You Can Measure — Up to 145 GHz.
The Junkosha EMF 0 Series delivers the ultra-low phase deviation under bending and temperature change that precision VNA measurements demand. Seven variants, 26.5 GHz to 145 GHz — available in Israel through Koto Electronics.
When Your Cable Is the Source of Error
Your VNA is calibrated. Your fixturing is solid. But every time the cable flexes, phase shifts — and your measurement drifts. You recal. You re-route. You compensate in software. The cable is costing you hours of confidence you should never have lost.
Lab Testing
You need repeatable S-parameter data across a full temperature sweep. A standard cable introduces enough phase variation to blur the result — leaving you unsure whether you're measuring the DUT or the cable.
ATE Rack
Cables are routed, flexed, and flexed again with every device swap. By the end of the day, phase drift has accumulated across the system. Were those early readings still valid?
mmWave Development
You're characterizing a 110 GHz component. At those frequencies, even marginal phase instability turns a clean measurement into an ambiguous result. Margin for error is zero.
The Cable Engineered for One Job — Accuracy.
The Junkosha EMF 0 Series was built around a single requirement: phase stability. Not as an afterthought — as the design brief. The result is a cable that stays in spec when it bends, and stays in spec when it heats up.
- ✓Superior Phase Stability Under BendingThin, flexible fluoropolymer construction minimizes mechanical stress. Bend it, route it, flex it — your measurement stays where you left it.
- ✓Seven Variants, One Ecosystem (26.5 – 145 GHz)MWX021 through MWX004 share the same 50 Ω design philosophy. Scale from microwave to millimeter-wave without switching cable families.
- ✓Designed for VNA Port CablesVelocity of propagation 74–79 %, VSWR as low as 1.33, propagation delay 3.6–4.5 ns/m — spec'd for the connection that matters most: port to DUT.
- ✓Proven Operating Range: –30 to +85 °CClimate-controlled lab or environmental cycling — the 0 Series performs within spec across the full operating envelope.
- ✓RoHS Compliant — Every VariantNo exceptions, no workarounds. All seven variants ship fully compliant, ready for export and integration into any certified system.
Cable Construction
Get the Right Cable in 3 Steps
No international lead times. Local support in Hebrew and English.
Tell us your frequency and application.
Share your test frequency (26.5–145 GHz), required connector type, and assembly length. We'll identify the right variant — or matched-phase pair — for your setup.
Receive a quote from your local Israeli contact.
Koto Electronics handles your order locally. Pricing, availability, and technical questions answered in Hebrew or English — no international back-and-forth.
Install and measure with confidence.
Connect the 0 Series to your VNA. The phase stability you've been looking for is now built into your measurement setup — from the first connection.
7 Frequency Options
All variants share 50 Ω impedance and the same phase-stable construction. Larger OD = lower insertion loss and higher power. Smaller OD = higher frequency and better flexibility.
Technical Comparison
All specifications are typical values at 25 °C and sea level. Characteristic impedance 50 Ω on all variants. RoHS compliant.
| Model | Max Freq. | OD | Mass | VSWR | Ins. Loss | Prop. Delay | Vel. of Prop. | Min. Bend R. | Length Range |
|---|---|---|---|---|---|---|---|---|---|
| MWX021 | 26.5 GHz | 8.5 mm | 122 g/m | 1.33 | 2.0 dB/m | 4.21 ns/m | 79% | 30 mm | 700 – 1,500 mm |
| MWX051 | 50.0 GHz | 6.6 mm | 76 g/m | 1.46 | 4.6 dB/m | 4.19 ns/m | 79% | 30 mm | 700 – 1,500 mm |
| MWX061 | 67.0 GHz | 6.6 mm | 73 g/m | 1.46 | 7.3 dB/m | 4.35 ns/m | 77% | 30 mm | 700 – 1,500 mm |
| MWX071 | 70.0 GHz | 6.6 mm | 73 g/m | 1.46 | 7.5 dB/m | 4.35 ns/m | 77% | 30 mm | 700 – 1,500 mm |
| MWX001 | 110.0 GHz | 4.0 mm | 50 g/m | 1.43 | 11.8 dB/m | 4.2 ns/m | 79% | 15 mm | 100 – 200 mm |
| MWX002 | 120.0 GHz | 4.0 mm | 50 g/m | 1.43 | 14.5 dB/m | 4.2 ns/m | 79% | 15 mm | 100 – 200 mm |
| MWX004 | 145.0 GHz | 4.0 mm | 50 g/m | 1.50 | 28.1 dB/m | 4.5 ns/m | 74% | 20 mm | 100 – 200 mm |
* Assembly length tolerance: ±10 mm for lengths up to 1,000 mm. Contact us for non-standard lengths.
Frequently Asked Questions
Everything you need to specify and order the right cable.
What makes the 0 Series different from standard microwave cables?
Which connector types are available?
Are custom lengths available?
Can I order matched-phase cable pairs?
How quickly can I receive the cables in Israel?
How do I choose between variants — larger or smaller OD?
The Full EMF Series
RF and microwave cable assemblies for every test and measurement application.
Stop compensating for your cable.
Start measuring.
The EMF 0 Series is available in Israel through Koto Electronics — your authorized local source for Junkosha precision cable assemblies. Get a quote, download the datasheet, or talk to our technical team today.