High Power Flexible RF Cable Assemblies

Amphenol Military & Aerospace high‑power flexible RF cable assemblies deliver reliable high‑frequency performance when standard coaxial cables cannot meet power or durability demands. Manufactured by Times Microwave Systems, the product family integrates proven StripFlex®, HP, and HPL high‑power cable technologies into rugged 50 Ω assemblies suitable for defense, aerospace, and high‑energy industrial applications.

StripFlex® High‑Performance Construction

The StripFlex® series employs a triple‑layer shielding system—a silver‑plated flat‑ribbon braid, overlapped composite aluminum tape, and an outer silver‑plated round‑wire braid. This structure provides exceptional EMI/EMP shielding and low attenuation while preserving flexibility. A low‑density PTFE dielectric minimizes loss and maintains consistent VSWR under repeated flexure. StripFlex® cables such as SFT‑393 and SFT‑600 extend reliable operation across microwave frequency ranges and elevated temperatures.

HP Series – Very High Power Capability

The HP family supports kilowatt‑level peak power transfer for systems such as MRI machinery, semiconductor production tools, and high‑power radar transmit chains. These solid‑dielectric coaxial constructions use silver‑plated copper conductors and metal outer conductors to ensure controlled impedance and minimal RF leakage at frequencies up to the high‑GHz range.

HPL Series – Cost‑Effective Flexibility

HPL assemblies balance performance and cost for dynamic routing or mobile platforms. Their design provides improved flex life over HP variants while retaining strong shielding effectiveness and high‑power handling, suiting radars, laser drivers, and RF heating equipment where continuous movement and vibration are common.

Engineering and Application Guidance

• Impedance: 50 Ω standard interface for broad RF system compatibility.
• Power Derating: Apply correction for temperature, altitude, and VSWR per manufacturer guidelines to maintain safe thermal operation.
• Connector Options: Compatible with HPQD™ and MPQD™ high‑power RF connectors offering superior heat dissipation and environmental sealing.
• Typical Applications: radar transmit feedlines, electronic warfare systems, semiconductor and MRI equipment, and industrial RF power transmission networks.

Comprehensive electrical performance charts, attenuation versus frequency data, and connector matching details are available in the Times Microwave Systems technical resources. These assemblies allow engineers to select the appropriate balance of loss, power capacity, and flexibility across StripFlex®, HP, and HPL families to meet mission‑critical RF system requirements.