Index / Cables / Coaxial Cable
Cables
Coaxial Cable
Concentric conductor RF line
A centre conductor sits inside a foam dielectric, wrapped by a foil-and-braid shield and a PVC jacket. The two conductors share an axis, so the entire electromagnetic field is confined between them — EMI stays out, the signal stays in, and characteristic impedance stays constant.
Key specifications
Impedance
50 Ω (RF) · 75 Ω (video)
Frequency
DC – ~3 GHz
Common types
RG-6 · RG-59 · RG-58
Patented
1880 · Oliver Heaviside
Sheet 002 · Plate 1 of 1 · 1:1 infographic
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