Microwave based detection, quantification and non-destructive evaluation of materials and compounds

The current tendency in most of the instruments is the one of developing its function without intervening in the activity of the means. This new technology with base in the microwaves has a strong application in the inspection of new dielectric materials or compound insulating. The non destructive technology of microwaves penetrates easily the insulating ones. ne penetration depth depends on its factor of lost of the same dielectric material and of the operation frequency. The possibility exists of measuring in direct contact or not with the sample, technologies of Reflection and / or Transmission. The experience that we have had inside the laboratory is centered in the application in near field of signals of microwaves in the X band, (8.2 GHz at 12.4 GHz.) modulated at 1 KHz. By means of the use of this frequency it is possible to detect the presence of water in a mixture, those like cement and water, cement and sand without an specific arrangement of the samples under analysis we always consider the samples as we take, ready for their analysis, that means you doesn't pulverize neither you accommodation in the Carrier samples. It was possible to detect water by means of the measurement of the amplitude of the reflection of the applied signal. The equipment has couplers that guide the signal toward the sample, and a detector coupled to a meter that presents us readings in milivolts.