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To obtain the system information of Ultra-Wideband microwave receiving system, accurate measurement of amplitude change and phase change of antenna received signal and antenna transmit signal has a very important practical significance. In this paper, the ADI's single-chip silicon bipolar devices RF/IF gain and phase detector AD8302 is used as a core components in a wideband amplitude ratio and phase...
In this paper, the method for measuring the complex permittivity of concrete has been proposed, and using this method the complex permittivity of concrete is measured. This method for calculating the dielectric constant of concrete is used by measuring the deflection and the loss of electromagnetic wave in concrete block for experiments. The measuring device used is a single frequency radar. Measurement...
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