18 GHz Heavy-Duty Aluminum-Foil Low-PIM High-Power RF Cable B55

Engineering Note

The B55 is a high-power flexible RF coaxial cable positioned as the heavy-duty 18 GHz option. It keeps the confirmed B-series construction with LD PTFE dielectric, aluminum foil interlayer, silver-plated copper shielding, and blue FEP jacket, while emphasizing 5.45 mm heavy-duty blue FEP jacket for rugged 18 GHz high-power routes. Use it for RF routes where the confirmed electrical class and cable size fit the system envelope.

Cable Name	B55
Product Type	Flexible RF Cable / High Power Cable
Cable Structure	6-layer construction with LD PTFE dielectric, aluminum foil interlayer, dual shielding, and blue FEP jacket
Operating Frequency	18 GHz
Cut-off Frequency	28 GHz
Impedance	50 ohm +/- 1 ohm
Velocity of Propagation	76%
Shielding Effectiveness	>90 dB
Low PIM Performance	-155 dBc
Dielectric Withstanding Voltage	1000 V.DC
Bending Radius	Static 22 mm [0.866 in]; Dynamic 55 mm [2.165 in]
Weight	0.072 kg/m [0.0484 lbs/ft]
Temperature Range	-55 ~ +200 deg C [-67 ~ +392 deg F]
Inner Conductor	Silver-plated copper, 1.45 mm [0.057 in]
Dielectric	Low Density PTFE (LD PTFE), 4.18 mm [0.165 in]
Interlayer	High temperature aluminum foil, 4.55 mm [0.179 in]
Jacket	FEP / Blue, customizable, 5.45 mm [0.215 in]
Attenuation	26.3 dB/100m at 1000 MHz; 37.6 at 2000 MHz; 46.3 at 3000 MHz; 66.6 at 6000 MHz; 77.5 at 8000 MHz; 87.3 at 10000 MHz; 97.9 at 12400 MHz; 112.3 at 16000 MHz; 119.8 at 18000 MHz
Average Power	0.810 kW at 1000 MHz; 0.567 at 2000 MHz; 0.460 at 3000 MHz; 0.320 at 6000 MHz; 0.275 at 8000 MHz; 0.244 at 10000 MHz; 0.218 at 12400 MHz; 0.190 at 16000 MHz; 0.178 at 18000 MHz