Coaxial RF Cable

Amphenol Military & Aerospace Coaxial RF Cables form a unified family of 50 Ω transmission lines supporting microwave through millimeter‑wave frequencies. This grouped category covers flexible and semi‑rigid constructions along with specialized low‑loss, high‑power, small‑diameter, and cryogenic variants engineered by Amphenol business units including Times Microwave Systems, EZ Form, SV Microwave, and IntelliConnect.

Product Family Overview

The family includes both semi‑rigid and flexible coaxial cable types optimized for signal integrity, durability, and easy integration within defense and aerospace hardware. Cables are offered in diameters from miniature Ø 0.047 in up to high‑power variants exceeding 0.25 in outer diameter. Options encompass stranded‑core SuperFlex types for high flexibility, StripFlex® and HPL lines for elevated power handling, and CryoCoax semi‑rigid designs for stable impedance at cryogenic temperatures below 4 K.

Construction and Performance

• 50 Ω impedance‑controlled design with low‑VSWR performance across radar, SATCOM, EW, and test bands.
• Material options including copper, stainless steel, and cupronickel for tailored attenuation, strength, and thermal properties.
• Shielding systems such as spiral flat‑strip braids, double‑shielded formable jackets, and SiO₂ dielectric semi‑rigid alternatives for extreme environments.
• Available with FEP or polyurethane outer jackets and optional vapor or hermetic sealing for harsh‑environment use.

Application Domains

These cable families serve airborne, spaceborne, naval, and ground‑based mission systems requiring broadband 50 Ω transmission. Typical applications include:

• RF jumpers and feedlines in radar and electronic warfare systems
• Phase‑matched assemblies in avionics and instrumentation
• Cryogenic and quantum‑measurement harnesses below 4 K
• High‑power coax runs in industrial and test facilities

Selection Guidance

Engineers can select among the associated sub‑families according to performance or mechanical priorities:

• General Purpose Semi‑Rigid RF Cable – Tight impedance stability for fixed, precision installations.
• Quantum & Cryo Semi‑Rigid RF Cable – Non‑magnetic, low‑temperature designs for quantum and scientific systems.
• General Purpose Flexible Coaxial Cable – Durable, bend‑tolerant designs for general microwave use.
• High Power Flexible Coaxial Cable – Large‑diameter, StripFlex® or HPL lines for kilowatt‑level transmission.
• Small Diameter Flexible RF Cable – Compact Ø .047 in to Ø .085 in assemblies optimized for confined modules.
• Low Loss Flexible RF Cable – Enhanced dielectric and braid systems minimizing attenuation for long runs and frequency stability.

Each sub‑series can be supplied as finished assemblies with standard SMP, SMA, 2.92 mm, or N‑Type connectors as defined in related product pages. Together they represent the foundation of Amphenol’s RF Cable and Assembly portfolio linking precision connectors to mission‑critical systems.