CHEMANDY ELECTRONICS Suppliers of the unusual

RF Trap With Attenuator Calculator

Calculates the attenuation, 'impedance', reflection coefficient, VSWR and return loss of a circuit that incorporates a RF tank circuit into a Pi attenuator. Preferred resistor values are entered into the text boxes, similar to the way that values for a prototype may be selected. Values for the tank circuit may be selected with the Tank Circuit Resonant Frequency Calculator. A FLEXI-BOX is available with a dedicated PCB for this circuit and there is a selection of connectors. This is supplied as a kit, or as a ready built RF Trap With Attenuators

[circuit diagram]

 
Characteristic impedance of the system:   Ohms Attenuation:   dB
Enter the value of R2/R3 resistor:   Ohms Impedance:   Ohms
Enter the value of R1/R4:   Ohms VSWR: 
Reflection Coefficient: 
Return Loss:   dB
 

This calculator uses JavaScript and will function in most modern browsers. For more information see About our calculators

The calculator uses simple Ohms law formulas, and more comprehensive formulas for Voltage Reflection Coefficient and VSWR which are available at:-

http://www.kathrein-scala.com/tech_bulletins/EngRef.pdf

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

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