Calculates the resistor values, attenuation, 'impedance', reflection coefficient, VSWR and return loss of a Pi attenuator. This can be built into a FLEXI-BOX, and a transmission line PCB is available which easily adapts for this circuit with one simple trimming operation. There is also a selection of suitable RF connectors available.
![[pi attenuator formula]](../images/matching_pi_attenuator.gif)
1) Enter the system impedance and required attenuation then then press "Calculate" below to obtain the ideal resistor values.
This calculator is provided free by Chemandy Electronics in order to promote the FLEXI-BOX
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