18 GHz Heavy-Duty High-Voltage Flexible Low-Loss RF Cable S73

Engineering Note

The S73 is an 18 GHz heavy-duty high-voltage flexible low-loss RF coaxial cable designed for high-power base station routing, RF testing, naval and ground systems, and demanding microwave interconnects where low loss, voltage withstand, low PIM behavior, and enhanced cable protection are required. Its 7.30 mm blue FEP jacket, LD PTFE dielectric, silver-plated copper inner conductor, silver-plated copper strip inner shield, and silver-plated copper braid outer shield support reliable signal transmission in high-intensity RF environments. The cable combines DC–18 GHz operating capability, 1900 V.DC dielectric withstand voltage, -155 dBc low PIM performance, >90 dB shielding effectiveness, and 0.380 kW average power at 18 GHz for heavy-duty flexible low-loss RF interconnect applications.

Cable Name	S73
Product Type	Heavy-Duty High-Voltage Flexible Low-Loss RF Coaxial Cable
Cable Structure	5-layer flexible low-loss RF cable with blue FEP jacket
Operating Frequency	DC–18 GHz
Cut-off Frequency	19 GHz
Impedance	50 ± 1 Ω
Velocity of Propagation	76%
Shielding Effectiveness	>90 dB
Low PIM Performance	-155 dBc
Dielectric Withstanding Voltage	1900 V.DC
Static Bending Radius	29 mm [1.142 in]
Dynamic Bending Radius	57 mm [2.244 in]
Weight	0.118 kg/m [0.0793 lbs/ft]
Temperature Range	-55 to +165 °C [-67 to +329 °F]
Inner Conductor	Silver-plated copper, 2.03 mm [0.080 in]
Dielectric	Low Density PTFE, 5.33 mm [0.210 in]
Inner Shield	Silver-plated copper strip, 5.53 mm [0.218 in]
Outer Shield	Silver-plated copper wire braiding, 6.10 mm [0.240 in]
Jacket	FEP / Blue, customizable, 7.30 mm [0.287 in]
Attenuation	15.9 dB/100m @1 GHz; 22.8 dB/100m @2 GHz; 28.3 dB/100m @3 GHz; 33.0 dB/100m @4 GHz; 37.1 dB/100m @5 GHz; 41.0 dB/100m @6 GHz; 47.9 dB/100m @8 GHz; 54.1 dB/100m @10 GHz; 60.8 dB/100m @12.4 GHz; 74.5 dB/100m @18 GHz
Average Power	1.761 kW @1 GHz; 1.233 kW @2 GHz; 0.995 kW @3 GHz; 0.854 kW @4 GHz; 0.758 kW @5 GHz; 0.686 kW @6 GHz; 0.588 kW @8 GHz; 0.520 kW @10 GHz; 0.463 kW @12.4 GHz; 0.380 kW @18 GHz