Abstract: Systems and methods for monitoring electromagnetic field power density are disclosed. The system includes a broadband antenna configured to convert a plurality of electromagnetic waves at a plurality of frequencies into a broadband signal. The system also includes a power adjustment system configured to passively selectively attenuate the broadband signal to provide a filtered output signal for a predetermined range of frequencies. The system further includes an output system configured provide an indicator to an end-user of the system if the filtered output signal exceeds a predetermined threshold level that characterizes a predetermined electromagnetic power density threshold.