KAELEN MICROWAVE

KL-400A

Low-Loss Phase-Stable Coaxial Cable — Low-Loss, Phase-Stable Coaxial Cable — Flexible Construction

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Frequency
DC–40 GHz
Series
KL-A · Flexible, low-loss, phase-stable
Outer diameter
4 mm
Attenuation @ 1 GHz
33.5 dB/100 m
Operating temperature
–55°C ~ +165°C

Structure & Materials

ElementDimension (mm)Material
Center Conductor1.05Silver-Plated Copper
Dielectric2.85Low-Density PTFE
Inner Shield3.05Silver-Plated Copper Tape
Outer Shield3.40Silver-Plated Copper Braid
Outer Jacket4.00Green FEP (Custom Colors Available)

Electrical Properties

ParameterValue
Operating FrequencyDC – 40 GHz
Cutoff Frequency41 GHz
Characteristic Impedance50 Ω
Velocity of Propagation82%
Shielding Effectiveness> 90 dB
Dielectric Withstanding Voltage1500 V DC

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

Frequency (MHz)Attenuation (dB/100m)Avg. Power (kW)
100033.50.634
200047.50.447
300058.30.365
600082.80.257
800095.80.222
10000107.20.198
12400119.70.178
18000144.70.147
26500176.40.120
40000218.10.097

Mechanical & Environmental

ParameterValue
Static Bend Radius20 mm
Dynamic Bend Radius40 mm
Weight0.036 kg/m
Operating Temperature–55°C ~ +165°C

Features & benefits

  • Phase-stable across temperature (<750 ppm, –55°C to +85°C)
  • Low insertion loss
  • High power handling
  • Low PIM (−155 dBc)
  • Lightweight construction

Typical applications

  • Phased-array radar
  • Airborne electronics
  • Electronic warfare (EW)
  • Any application demanding tight loss and phase tolerance

Related parts

Need this cable terminated? Request a custom assembly using KL-400A.