Transmission Line Power Factor
Estimate one-way cable attenuation, transmitted power factor, output power, phase shift, and delay from length and cable type.
Ready.
One-way insertion loss (dB)N/A
Power factor Pout/PinN/A
Voltage factor Vout/VinN/A
Output power Pout (W)N/A
Power lost in cable (W)N/A
Phase shift (deg)N/A
Electrical delay (ns)N/A
Wavelength in line (m)N/A
- Loss model used: loss_dB = att_1GHz * sqrt(f_GHz) * (length_m / 100)
- Power factor = 10^(-loss_dB / 10)
- Preset values are typical approximations. Verify with vendor attenuation-vs-frequency data for final design.
Using Cable Loss Estimates Responsibly
Cable loss affects delivered power, effective voltage swing, and system margin. This tool provides fast estimates for planning and comparison across cable families, especially during architecture and harness tradeoff stages.
What this model is good for
- Comparing multiple cable types at the same frequency and length.
- Estimating how much PA headroom is consumed by feedline loss.
- Checking whether added cable length significantly shifts phase and delay budget.
Interpreting the outputs
- Insertion loss (dB): one-way line attenuation estimate at current frequency.
- Power factor: ratio of output to input power after line loss.
- Phase and delay: timing impact based on velocity factor and physical length.
Before final release
Replace preset attenuation with vendor frequency points or measured data for the exact cable and connector chain. Published attenuation often varies by construction, bend condition, and temperature, so design margins should include those variations.