The Industry Standard for Microwave Test Phase Stability
PHASEFLEX®: Unmatched Phase Repeatability for Demanding RF Test
When measurement accuracy is non-negotiable, PHASEFLEX® test cable assemblies deliver exceptional phase stability and repeatability across millions of flex cycles — from DC to 110 GHz. Trusted by the world's leading microwave test labs.

The industry-leading PHASEFLEX® test cable assemblies deliver exceptional phase stability and repeatability for the most demanding microwave test environments. Engineered for DC to 110 GHz with phase stability performance that outlasts competitive solutions across millions of flex cycles.
Why Choose Gore PHASEFLEX® Ruggedized Test Assemblies?
Best-in-Class Phase Stability Under Flexure
PHASEFLEX® cables maintain phase within ±3° under repeated flexure — a specification that competitive cables struggle to achieve even when new, let alone after repeated use. This directly translates to measurement confidence: calibration errors from cable movement are minimized, and your VNA or signal analyzer measurements remain accurate throughout the test sequence.
DC to 110 GHz Coverage in One Platform
From baseband signal routing to W-band (75–110 GHz) component characterization, PHASEFLEX® covers the full range your lab needs. Rather than maintaining multiple cable families for different frequency bands, engineers can standardize on PHASEFLEX® and benefit from consistent phase behavior across all measurement setups.
Millions of Flex Cycles — Verified Durability
Lab cables fail from fatigue long before their electrical specs degrade in a datasheet. PHASEFLEX® assemblies are rated for millions of flex cycles, which means they outlast typical lab equipment lifetimes. This reduces cable replacement costs and eliminates the costly downtime and recalibration triggered by a failed test cable mid-measurement campaign.
Technical Specifications
- Frequency Range
- DC to 110 GHz
- Characteristic Impedance
- 50 Ω
- Phase Stability (flex)
- ±3° (typical)
- Amplitude Stability (flex)
- ±0.1 dB (typical)
- Flex Life Rating
- Millions of flex cycles
- Connector Options
- SMA, 2.92 mm, 2.4 mm, 1.85 mm, 1.0 mm
- Operating Temperature
- -65°C to +165°C
Applications
- VNA measurement port extensions and test fixture interconnects
- On-wafer probing setups for semiconductor device characterization
- Millimeter-wave (mmWave) component testing at 5G frequencies
- Phased array antenna element calibration and test
- Automated test equipment (ATE) RF switching matrix cabling
- Radar component characterization up to W-band
Industries Served
Frequently Asked Questions
What makes PHASEFLEX® phase stability superior to standard test cables?
PHASEFLEX® uses Gore's proprietary ePTFE dielectric construction that minimizes dimensional change under flexure. The cable geometry is engineered to distribute bending stress uniformly, preventing the localized phase shifts that occur in competitive cables when the cable is moved or repositioned between measurements.
Can PHASEFLEX® cables be used for calibration reference standards?
PHASEFLEX® assemblies are used as measurement cables, not calibration standards. However, their exceptional phase stability means that repositioning the cable between calibration and measurement introduces negligible error — a key benefit in setups where the cable must move during testing.
What is the highest frequency connector available for PHASEFLEX®?
PHASEFLEX® is available with 1.0 mm connectors supporting frequencies up to 110 GHz (W-band). For 26.5 GHz measurements, 2.92 mm (K) connectors are standard. Gore's application team can advise on connector selection for your specific frequency range.
How does RSTECH support PHASEFLEX® procurement in Israel?
RSTECH Electronics is the authorized Gore representative in Israel and can source PHASEFLEX® assemblies in standard configurations as well as custom lengths and connector combinations. We provide local technical support for specification selection and can assist with customs and import documentation.
Ready to source PHASEFLEX® Ruggedized Test Assemblies in Israel?
Contact RSTECH Electronics — your authorized Gore representative in Israel.