RF Calculator

Use this tool to calculate Resistor values for a Pi attenuator. Enter the desired value of attenuation and the characteristic impedance (default value is 50 ohm). Formula R1 = Zo [10dB/20 + 1] / [10dB/20 – 1] R2 = Zo/2 [10dB/10 – 1] / [10dB/20] where R1 is the shunt resistor and R2 is the … Read more

This calculator converts Electric Field Strength (also known as Field Intensity) to Power. The unit for field strength is V/m and power is measured in dBm or Watt. The calculator requires as input Field Strength (E) Antenna gain (G) Frequency of operation It uses this to compute the Antenna Factor, RMS voltage and then power … Read more