VITA, OpenVPX & SOSA-Aligned RF Cable Assemblies

SV Microwave VITA, OpenVPX & SOSA‑Aligned RF Cable Assemblies from Amphenol Military & Aerospace provide precision coaxial connectivity for modular defense computing platforms built to VITA 46 and VITA 65 architectures. These assemblies deliver 50 Ω low‑VSWR performance ensuring consistent impedance and minimal reflection between payload modules and backplanes in SOSA‑aligned OpenVPX systems.

Design Overview

The assemblies employ miniature SMPM or SMPS precision push‑on connectors configured per VITA 67.1 and 67.3 blind‑mate interface standards. Flexible 0.047 in or 0.085 in cables provide compact routing with broadband impedance control. Versions can incorporate ConvergeRF hybrid transitions tailored for bandwidth optimization and loss reduction.

Mechanical and Electrical Considerations

• Characteristic impedance: 50 Ω with controlled return loss across the operating band.
• Precision push‑on mating for repeatable engagement and minimal wear in high‑density arrays.
• Cable diameters and materials selected for phase stability with vibration and thermal cycling.
• Compatible with standard VITA 67 module interfaces and SOSA‑aligned payload layouts.

Integration and Configuration Options

Assemblies can bridge between VPX modules, extend RF channels to MIL‑DTL‑38999 harness interfaces, or link to external instrument panels. Typical configurations include:

• VITA 67.3 module‑to‑VITA 67.3 backplane jumpers.
• VITA 67.3 to D38999 RF cable assemblies for system harness transition.
• Phase‑matched or multi‑channel bundles for coherent radar and EW subsystems.

Applications

These cable assemblies are used throughout open‑architecture defense and aerospace platforms where modular payloads require reliable, broadband RF interconnects. Common use cases include radar processors, electronic warfare receivers, sensor fusion modules, and embedded test subsystems. The precise mechanical tolerance, miniature geometry, and verified impedance control make them suitable for high‑frequency SOSA/OpenVPX environments demanding repeatable 50 Ω performance.