Broadband isotropic probe system for simultaneous measurement of complex E- and H-fields

An isotropic, broadband, non-directional rf electromagnetic radiation probe comprising:

• a set of three mutually orthogonal E-field antennas;
• and
• a set of three mutually orthogonal H-field antennas located such that both sets of antennas encompass essentially the same volume of space;
• and
• circuit means for simultaneously measuring said displaying the sum of a selectable combination of the squared vector components of both the E-field and the H-field radiation detected by said probe, said circuit means comprising square law detector means associated with each antenna in each of said sets of antennas, summing means, means for feeding the outputs of said square law detectors to said summing means, display means, and means for feeding the output of said summing means to said display means.

An isotropic, broadband, non-directional, rf electromagnetic radiation probe comprising:

• a set of three mutually orthogonal dipole antennas;
• a set of three mutually orthogonal loop antennas essentially encompassing the same volume of space as set of dipole antennas;
• a plurality of filters coupled to said dipole antennas to flatten out the response of each of said dipoles over a desired frequency range;
• a plurality of filters coupled to said loop antennas to flatten the response of each of said loops over a desired frequency range;
• Schottky diode detectors coupled to said filters to provide detected signals from the outputs of said filters;
• and
• circuit means for simultaneously measuring the total electric field detected by said dipole antennas and total H-field radiation detected by said loop antennas, said circuit means comprising square law detector means associated with each antenna in each of said sets of antennas, summing means, means to read the outputs of said square law detectors to said summing means, display means, and means to feed the output of said summing means to said display means.