Splitting and combining
A power divider splits one input into multiple outputs, while a combiner does the reverse. The same component often works both ways when it is reciprocal.
Common topologies
- Wilkinson dividers — matched, isolated outputs over a broad band.
- Resistive dividers — extremely wideband but lossy and not isolated.
- Reactive or T-junction dividers — compact but with limited isolation.
- Hybrid couplers offer another splitting topology when fixed 90 or 180 degree phase relations are needed.
- Wilkinson isolation ports must end in matched terminations or the isolation is lost.
Key specs
- Splitting loss and excess insertion loss.
- Isolation between output ports.
- Amplitude and phase balance.
- Power handling and frequency range.
Selection tips
- Choose Wilkinson-style dividers when isolation between branches matters.
- Choose resistive dividers only when bandwidth outweighs loss.
- For high-power combining, verify thermal ratings carefully.
- Browse our Wilkinson power dividers.