.8 Mm-noise Auto-test Calibration Device Design And Key Technologies

Noise, as a random interference signal which is not expect , be existence of a broad variety of radio systems. As the continuous development of science and technology, people more and more precision signals, and noise as an inevitable and pervasive interference signals, which not only affect people's demand for the signal precision, but the randomness of the noise also seriously affected the test repeatability and test accuracy, this article introduce a set of 8mm noise by automatic calibration test equipment developed from the 10th Institute of China Electronics Corporation, as a group of key researchers, in the whole development process I designed to Y factor method to test the theory, use of hot and cold noise source with a high-precision commercial receiver program. Successful formation of a 10MHz-40GHz Noise automatic test calibration device, and then, I repeated the experiment by another, for which the core components, including the noise source, receiver and control components of the transformation, and a rigorous theory analysis, the error compensation of each end, making the device assigned to the task required by each unit of related indicators.The first, this article describes the background of today's noise test, and the second, this article proceed from the principle of the noise test, described this system and related design principles, and design programs and demonstrated its feasibility. Then, this article adopted a number of repeated experiments I found the process of the core components of the various effects of existing issues related to the overall test accuracy, including the noise source, receiver, control components and the aspects of error compensation, respectively, were theoretical analysis, and propose relevant solutions. Finally, through experiments and related data, verify the noise of this 8mm device features automatic calibration test to achieve these targets.