Method of measurement of the section line radar reflective objects electromagnetic waves in the range of 1 GHz to 100 GHz to characterize electromagnetic radiation absorbing materials

摘要

Method of measuring section straight radar reflective objects electromagnetic waves in the range of 1 GHz to 100 GHz to characterize electromagnetic radiation absorbing materials. Utility model patent of an evaluation methodology of section line Radar Objects reflectors of electromagnetic waves, using the methodology called autocalibrau00e7u00e3o.The measurement of straight section of an object reflector radar is carried out in closed environments in conditions of free space, such as a camera anecu00f3ica, or in an open environment, free of interfering reflective structures.The determination of the section line radar a certain object, in square meters, via the methodology of autocalibrau00e7u00e3o, is carried out by comparison with known values of the section line radar reflectors to reference objects, with geometries (flat sheets, spheres, etc) and known dimensions Provided.The device used for the implementation of the measures of section line radar using this methodology, it is composed of the following equipment: camera anecu00f3ica, signal generator, spectrum analyzer, the transmitting and receiving antennas and the positioner of the object under study.The straight section, radar target is obtained by the difference between the signals of the reference and object coated with the material absorbing electromagnetic radiation, under investigation, and that each increase obtained in the spectrum analyzer of - 3.0 dB or + 3.0 dB of the object in relation to the Ref. Eru00eancia, corresponding to a decrease or increase, respectively, of approximately 50% in the area.