SFT-304 cable provides the ultimate performance in a flexible cable. The low density PTFE tape dielectric provides the lowest dielectric loss
of any practical dielectric and silver plated conductors make these the ideal choice for microwave and military interconnect systems. The high temperature dielectric and jacket enable their use in high ambient temperatures up to +200°C. They have losses smaller than their low temperature TCOM counterparts as well as higher power handling capability.
SFT-304 Features and benefits
• Lower Loss Microwave Interconnect
• Wireless Base Station Interconnect
• Lower Loss than SF Versions
• Superior Shielding Effectiveness
• Low Passive Intermod (-155 dBc)
• Stable Loss & VSWR vs. Flexing
• Excellent Connector Selection
The Shielding system, provided by Times Microwave Systems, consists of an inner silver plated flat ribbon braid (FSC), a spirally applied and overlapped composite aluminum tape interlayer (Intl), and an overall silver plated round wire braid (SC). The flat ribbon shield affords approximately 30% lower loss and >95 dB shielding compared with the typical M17/RG round wire braided shield (40 to 60 dB).
Standard M17/RG cables are shielded with high coverage single or double round wire braids. While these shields provide 40 dB and 60 dB shielding effectiveness respectively, they are not particularly stable (loss & VSWR) nor is the shielding adequate for today’s sensitive wireless communications and microwave military/defense applications.
SFT-304 VSWR is lower since the flat ribbons can be applied over the dielectric much more uniformly than multi end round wire braids. The VSWR and attenuation variation due to aging and flexure is substantially lower at all frequencies, and especially above 12 GHz.
SFT-304 cable is also available with sweep testing performed for broadband VSWR and attenuation performance.
A good selection of interface connectors (crimp or clamp style) are available.
SFT-304 cables can be purchased in bulk reels or as predetermined and tested cable assemblies.