# RF Wireless World

## Home of RF and Wireless Vendors and Resources

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## RF Pad calculator | Formula for RF Pad Calculator

This page covers RF Pad calculator. The formula used in RF Pad calculator is also mentioned.

### RF Pad calculator-π-Type

Following calculator calculates resistor values for the attenuator pad having shape of 'π'.

Impedance in Ohms (input1) :

Attenuation in dB (input2) :

R1 and R2 are (output 1 and 2) :

R3(output 3) :

EXAMPLE of RF Pad calculator (PI-Type):
INPUTS: Impedance = 50 , Attenuation = 3dB
OUTPUTS: R1=R2= 16.6 (take standard 18 value), R3 = 66.9 (take standard 66.5 value )

### RF Pad calculator-T-Type

Following calculator calculates resistor values for the attenuator pad having shape of 'T'.

Impedance in Ohms (input1) :

Attenuation in dB (input2) :

R1 and R3 are (output 1 and 3) :

R2(output 2) :

EXAMPLE of RF Pad calculator (T-Type):
INPUTS: Impedance = 50, Attenuation = 9dB ;
OUTPUTS: R1=R3 = 64.4 and R2 = 195.43

### Formula/Equation used in RF Pad calculator

Following formula/equation is used in this RF Pad calculator. This equations are used for the RF attenuator pad calculators having shape of PI and T as mentioned above.

### Useful converters and calculators

Following is the list of useful converters and calculators.

dBm to Watt converter
Stripline Impedance calculator
Microstrip line impedance
Antenna G/T
Noise temp. to NF