A Wideband Magnetic Field Intensity Meter

Current advances in the state of the art in nearly all fields of electronic technology are increasing the number of the already abundant problems in radio frequency interference (RFI). A great many of these difficulties are caused entirely by magnetic field radiation. The number of magnetic interference problems is increasing rapidly due to several factors: the increasing use of semiconductor devices in power switching applications; the trend toward miniature circuitry; and the general increase in sensitivity of new electronic systems. Many of the interfering fields are of an impulsive nature and therefore contain a wide band of frequencies. In order to attack RFI problems in specific systems the interference producing fields must be measured and their sources identified prior to producing the RFI remedy. To accomplish the measurement of broadband impulsive magnetic fields a new instrumentation approach was required.