Determining the field strength from transmitted power is not an easy job. Various, quite complicated formulas have to be evaluated correctly. This application note explains, how to calculate electric and magnetic field strength and power flux density. A program associated to this application note helps to do the calculation and converts Watts to mW and dBm, V/m to mV/m and dBmV/m as well as A/m to mA/m and dBmA/m. Additional applications are calculation of propagation loss or antenna factors. This application is also available for iPhone, iPod Touch and Android Smartphones. It can be downloaded free-of-charge from the App Store and the Android Market respectively.
1MA85: Field Strength and Power Estimator
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