Patent ID: 7286228
Filing Date: 2007-10-23
Classification: G01R

Abstract:
1. A method of measuring properties of a circularly polarized rotating electromagnetic wave, the method comprising the steps of: forming a magnetic field with at least one of a permanent magnet and an electromagnet; radiating a circularly polarized rotating electromagnetic wave generated by a circularly polarized rotating electromagnetic wave generating source to be measured into the magnetic field; and measuring variations in the magnetic field based on variations in an electric current to thereby detect properties of the circularly polarized rotating electromagnetic wave, wherein it is judged whether the electromagnetic wave radiated by the circularly polarized rotating electromagnetic wave generation source is a left- or right-circularly polarized rotating electromagnetic wave according to variations in an electric current due to variations in the magnetic field, using a property that the left-circularly polarized rotating electromagnetic wave travels from the S-pole to the N-pole and the right-circularly polarized rotating electromagnetic wave travels from the N-pole to the S-pole.