The effects of radiation resistance on the signal to noise limits of magnetic sensors and communication systems

This paper considers the influence of radiation resistance on the signal to noise (SNR) ratio in magnetic induction sensors and communication systems. It is shown that a magnetic sensor or receiver has a specific optimal frequency in which its SNR is maximal. It is also found that although magnetic induction systems are designed to operate under a magneto-quasi-static approximation, the radiation resistance may be a dominant noise factor even at low frequencies.