Conversion, Equations and Calculations for EMC & Radio testing

EMC & RF Testing Conversions & Calculators

EMC testing and wireless radio testing use many equations, formaulae and conversions. Here are some online free calculators that should make things easier.

General RF Calculators (50Ω System)

50 Ohm system RF calculator

50Ω System - dBuV to dBm

50Ω System - dBm to dBuV

50Ω System - dBuA to dBm

50Ω System - dBm to dBuA

50Ω System - dBuV to dBuA

50Ω System - dBuA to dBuV

Antenna equations & Radiated Fields

Frequency to Wavelength, antenna factor to antenna gain and radiated field conversions.

Antenna Equations

Calculate wavelength for frequency (Free Space)

Far Field distance - Dipole & Log P Antenna

Far Field distance - Horn Antenna

Antenna Gain dBi to Antenna Factor (50 Ω system)

Antenna Gain (numeric) to Antenna Factor (50 Ω system)

Antenna Factor to Antenna Gain (dBi) (50 Ω system)

Radiated field - dBuV/m to V/m

Radiated field - V/m to dBuV/m

Radiated Power & Electric Field Strength calculator

This calculator allows easy conversion of common measurement units such electric field strength to radiated power including the following:

  • dBuV/m at 3m or dBuV/m at 10m to EiRP (mW) or EiRP (dBm)
  • dBuV/m at 3m or dBuV/m at 10m to ERP (mw) or ERP (dBm)
  • EiRP (mW), EiRP (dBm), to dBuV/m at 3m or dBuV/m at 10m
  • ERP (mw) or ERP (dBm) to dBuV/m at 3m or dBuV/m at 10m
  • EiRP (mW) or EiRP (dBm) to ERP (mw) or ERP (dBm)

These conversions can be very useful when comparing FCC dBuV/m electric field strength measurments to radio standards such as AS/NZS 4268, allowing easy comparison gainst the limits that may be defined in terms of EiRP (mW).

Radiated Power Calculator: ERP, EIRP & dBuV/m

1. EiRP (mW) - Part 1

2. EiRP (mW) - Part 2

3. EiRP (dBm) - Part 1

4. EIRP (dBm) - Part 2

5. ERP (mW) - Part 1

6. ERP (mW) - Part 2

7. ERP (dBm) - Part 1

8. ERP (dBm) - Part 2

9. dBuV/m @ 3m - Part 1

10. dBuV/m @ 3m - Part 2

11. dBuV/m @ 10m - Part 1

12. dBuV/m @ 10m - Part 2

Radiated Power Calculator: ERP, EIRP & dBuV/m - Mobile

EiRP (mW) Conversions

EiRP (dBm) Conversions

ERP (mW) Conversions

ERP (dBm) Conversions

dBuV/m @ 3m Conversions

dBuV/m @ 10m Conversions

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