110 GHz Ultra-Compact RF Precision Test Cable T18

Engineering Note

The T18 is a 110 GHz ultra-compact RF precision test cable designed for millimeter-wave testing, dense high-frequency module interconnects, and precision laboratory setups where routing space, bend resistance, and signal integrity are key selection factors. Its construction uses a silver-plated copper inner conductor, low density PTFE dielectric, silver-plated copper strip inner shield, low density PTFE interlayer, silver-plated copper wire braiding, and a blue FEP jacket. The cable supports compact test routing while providing 80% velocity of propagation, >90 dB shielding effectiveness, 400 V.DC dielectric withstand voltage, and operation up to 110 GHz.

Cable Name	T18
Product Type	Standard RF Precision Test Cable
Cable Structure	Ultra-compact flexible precision test cable with blue FEP jacket
Operating Frequency	110 GHz
Cut-off Frequency	128 GHz
Impedance	50 ± 1 Ω
Velocity of Propagation	80%
Shielding Effectiveness	>90 dB
Dielectric Withstanding Voltage	400 V.DC
Static Bending Radius	10 mm [0.394 in]
Dynamic Bending Radius	20 mm [0.787 in]
Weight	0.008 kg/m [0.0054 lbs/ft]
Temperature Range	-55 ~ +125 ℃ [-67 ~ +257 ℉]
Inner Conductor	Silver-plated copper, 0.31 mm [0.012 in]
Dielectric	Low density PTFE, 0.88 mm [0.035 in]
Inner Shield	Silver-plated copper strip, 1.00 mm [0.039 in]
Interlayer	Low density PTFE, 1.20 mm [0.047 in]
Outer Shield	Silver-plated copper wire braiding, 1.45 mm [0.057 in]
Jacket	FEP / Blue, customizable, 1.85 mm [0.073 in]
Attenuation	113.7 dB/100m @1 GHz; 499.3 dB/100m @18 GHz; 611.5 dB/100m @26.5 GHz; 760.4 dB/100m @40 GHz; 1002.7 dB/100m @67 GHz; 1314.3 dB/100m @110 GHz
Average Power	0.039 kW @1 GHz; 0.009 kW @18 GHz; 0.007 kW @26.5 GHz; 0.006 kW @40 GHz; 0.004 kW @67 GHz; 0.003 kW @110 GHz