An equal ideal N-way split has 10 log10(N) dB division loss per branch. Real dividers add excess loss and may have balance error.
How it works in practice
Use the datasheet's loss convention to avoid double counting. All ports must meet the relevant matching conditions. Unequal split ratios require separate branch calculations. Power handling and combining restrictions remain independent requirements.
Example and interpretation
An ideal eight-way equal divider has about 9.03 dB division loss per branch.
Checks before use
- Identify the split ratio
- Calculate ideal branch loss
- Add specified excess loss
- Check each branch's delivered level
Important limit
Do not call unavoidable power division an insertion-loss defect.
Related Centron RF product
SMA 2 W 6 GHz fixed attenuator. Use calculated levels to define a requirement, then compare it with the exact product’s current bandwidth, input power, impedance and available attenuation options. Calculations assume stated conditions and do not replace a component datasheet.
Further reading
Keysight: Fundamentals of RF and Microwave Power Measurements. This background reference explains general principles; the selected Centron RF model’s datasheet governs its own ratings.
Related guides
Educational guide. Numerical examples use the stated assumptions and are not test results for a supplied unit.