Power Divider/Combiner

Example schematic of 4Way resistive and 4Way reactive power dividers

A power divider/combiner is a device used to route signals. It is available with either resistive or reactive design.  Resistive power dividers are constructed in a star configuration which functions like a RF hub which is ideal in radio-to-radio RF testing.  Radios connected to the RF hub will all Rx each other at the same signal level.  Reactive power dividers have a fan-in/fan-out layout.  Reactive power dividers have less through loss than their resistive counterparts.  The reactive design also has isolation (20dB typical) between the combiner ports.

50 Ohm Models

75 Ohm Models

  • Reactive:  fan-in/fan-out with isolated combiner ports
  • Resistive:  star configuration acts as RF hub