KAELEN MICROWAVE

KL-550B

High-Power Low-Loss Coaxial Cable — High-Power, Low-Loss Coaxial Cable

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Frequency: DC–18 GHz
Series: KL-B · High-power, low-loss
Outer diameter: 5.45 mm
Attenuation @ 1 GHz: 26.3 dB/100 m
Operating temperature: –55°C ~ +200°C

Structure & Materials

Element	Dimension (mm)	Material
Center Conductor	1.45	Silver-Plated Copper
Dielectric	4.18	Low-Density PTFE
Inner Shield	4.42	Silver-Plated Copper Tape
Middle Layer	4.55	High-Temperature Aluminum Foil
Outer Shield	4.95	Silver-Plated Copper Braid
Outer Jacket	5.45	Blue FEP (Custom Colors Available)

Electrical Properties

Parameter	Value
Operating Frequency	DC – 18 GHz
Cutoff Frequency	28 GHz
Characteristic Impedance	50 Ω
Velocity of Propagation	76%
Shielding Effectiveness	> 90 dB
Dielectric Withstanding Voltage	2000 V DC

Attenuation & Power Handling (Typical, 25°C / 40°C)

Frequency (MHz)	Attenuation (dB/100m)	Avg. Power (kW)
1000	26.3	0.810
2000	37.6	0.567
3000	46.3	0.460
6000	66.6	0.320
8000	77.5	0.275
10000	87.3	0.244
12400	97.9	0.218
16000	112.3	0.190
18000	119.8	0.178

Mechanical & Environmental

Parameter	Value
Static Bend Radius	22 mm
Dynamic Bend Radius	55 mm
Weight	0.072 kg/m
Operating Temperature	–55°C ~ +200°C

Features & benefits

Low insertion loss
High power handling
Low PIM (−155 dBc)
High cost-performance
High tensile strength

Typical applications

Airborne electronics
Electronic warfare (EW)
High-power RF transmission
Wireless base station internal interconnect
RF / microwave device testing

Related parts

Need this cable terminated? Request a custom assembly using KL-550B.