Test & Measurement RF Cable Assemblies

Overview
Micro‑Coax AccuPhase cable assemblies provide precision test and measurement interconnects for high‑frequency systems from DC to 70 GHz. Developed within Amphenol Military & Aerospace (AMAO), they bridge instrument ports and device‑under‑test connections where mechanical flexibility and phase stability are critical.

Design and Construction
Each assembly uses an internally ruggedized flexible coaxial core derived from the UTiFlex heritage design employing ARACON braid shielding and a helically wrapped silver‑plated copper outer conductor. This combination balances mechanical durability with electrical stability, resisting phase and amplitude shift from motion, bending, and temperature variation. Ultra‑low‑density PTFE dielectric options further minimize loss at mmWave frequencies.

Variants
The series covers multiple frequency grades to support varied laboratory and field needs:

• AccuPhase 26.5 GHz – enhanced mechanical protection for routine production and validation use with excellent crush and torque resistance.
• AccuPhase 40 / 50 / 70 GHz – progressively higher frequency versions, each maintaining tighter phase and amplitude tolerance under motion. The 70 GHz model features ARACON® outer braid for maximum stability and flexibility.

Key Attributes

• 50 Ω impedance with consistent low‑VSWR performance through the mmWave region.
• Exceptional phase and amplitude stability under mechanical stress and temperature change.
• Internally reinforced flexible construction that prevents recalibration after repositioning.
• Compatible with standard precision connectors including SMA, 2.92 mm, 2.4 mm, 1.85 mm, and 1.0 mm interfaces.

Applications
Designed for laboratory and field test benches, production validation stations, R&D environments, and flight‑line maintenance where measurement repeatability and port longevity matter. Typical use cases include radar subsystem characterization, electronic warfare equipment testing, SATCOM terminal alignment, and OpenVPX / SOSA‑aligned module verification.

Integration Guidance
Select assembly frequency grade and connector interfaces that match instrument ports and device under test. Maintain minimum bend radius per datasheet for optimal phase stability. Pair with Amphenol SV Microwave or XMA precision adapters and terminations to complete metrology‑grade test chains.

Datasheets and application notes for specific AccuPhase variants are available from the manufacturer website.