Transmission Line Phase <-> Length
Estimate electrical phase, delay, and wavelength from frequency, cable velocity factor, and physical length.
Ready.
Wavelength in line (m)N/A
Electrical length (lambda)N/A
Phase for current length (deg)N/A
Delay for current length (ns)N/A
Length for target phase (m)N/A
Length for target phase (cm)N/A
Length for target phase (mm)N/A
Length for target phase (in)N/A
- lambda(line) = c * VF / f
- Phase(deg) = 360 * length / lambda(line)
- Delay = length / (c * VF)
Engineering Notes
Physical cable length maps directly to electrical phase and delay. At GHz frequencies, even small length differences can create meaningful channel mismatch.
- Use target-phase length to estimate trim values quickly.
- For final tolerance decisions, verify with measured delay and phase data.