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.

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The calculator uses simple Ohms law calculations, and more comprehensive formulas for Voltage Reflection Coefficient and VSWR which are available at:- http://www.spectrum-soft.com/news/fall2009/vswr.shtm

This calculator is provided free by Chemandy Electronics in order to promote the FLEXI-BOX

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Mismatch Losses added on 31/12/2012