Coaxial cable
Coaxial cable is a type of electrical cable with an inner conductor surrounded by an insulating, surrounded by a conducting shield. Coaxial cable is often used for radio frequency signals as it provides more protection from external electromagnetic interference.
Formulas
![Schematic](/media/schematics/coaxial-cable.png)
![](/shared/media/generated/f12ea2e05963.png)
![](/shared/media/generated/d776660ce436.png)
![](/shared/media/generated/671d6fcd361d.png)
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Z is the symbol for impedance and is measured in ohm (Ω).
f is the symbol for frequency and is measured in hertz (Hz).
l is the symbol for length and is measured in meter (m).
C is the symbol for capacitance and is measured in farad per meter (F/m).
L is the symbol for inductance and is measured in henry per meter (H/m).
ε r is the dielectric constant.