Coaxial Transmission Line
[file: coax.mcd]
Formulas included in this spreadsheet:
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Coaxial cable characteristic impedance ZCOAX()
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Coaxial cable propagation delay PCOAX()
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Coaxial cable inductance LCOAX()
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Coaxial cable capacitance CCOAX()
Variables used:
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d1 Diameter of inner wire (in)
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d2 Diameter of outer shield (in)
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x Length of cable (in)
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er Relative dielectric constant of material
surrounding the inner wire
Characteristic impedance of coaxial cable (W):
Propagation delay per in. for coaxial cable (s/in.):
Inductance of coaxial cable (H):
Capacitance of coaxial cable (F):
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Example coaxial cable calculations
Diameter of AWG 30 inner wire (in.)
Inside diameter of shield (in.)
Length of cable (in.)
Relative dielectric constant
Characteristic impedance (W):
Total inductance (H):
Same result in nH:
Inductance per in. (H):
Total capacitance (F):
Same result in pF:
Capacitance per in. (F):
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