Patent ID: 6456070
Filing Date: 2002-09-24
Classification: G01R

Abstract:
A method of measuring intensity of an electromagnetic field surrounding a device-under-test, comprising the steps of:(a) disposing said device-under-test between an internal conductor and an outer conductor of a coaxial transmission line so that electric coupling and magnetic coupling take place between said internal conductor and said device-under-test in at least a portion of a frequency band; (b) measuring the values of a plurality of output currents flowing in said internal conductor in different directions while the electric and magnetic coupling are occurring, said output currents being in said at least a portion of a frequency band; (c) calculating (i) a value of an electric coupling current generated in said internal conductor in response to the electric coupling between said device-under-test and said internal conductor and (ii) a value of a magnetic coupling current generated in said internal conductor in response to magnetic coupling between said device-under-test and said internal conductor, the calculation step being based on a plurality of the measured values and directions of said output currents; and (d) calculating the intensity of the electric field and the intensity of the magnetic field based on said values of said electric and magnetic coupling currents.